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137 Cards in this Set
- Front
- Back
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Trapezius |
Origin: Upper: Occipital bone, ligamentum nuchae, spines of c7-T3 Lower: spines of T4-T12
Insertion: spine of scapula, acromion, lateral 1/3 of clavicle
Action: All: retracts the scapula -Superior Fibers: elevates scapula -Middle Fibers: ADDuct scapula -Inferior Fibers: depress, upward rotate scapula
Innervation: Accessory, c3-c5 |
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Sternocleidomastoid |
Origin: -sternal head: manubrium of sternum -clavicular head: medial third of clavicle Insertion: mastoid process, occipital bone Action: -unilateral: lateral flexion, contralateral rotation -bilateral: elevation of head, flex cervical vertebrae Innervation: Accessory, C2/3 |
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Semispinalis Capitis |
Origin: articular process of C4-C6, transverse process C7-T7 Insertion: occipital bone Action:extend head, contralateral rotation of head Innervation: C spine |
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Splenius capitis |
Origin: Spinous processes of C7-T4 Insertion: Occipital, mastoid Action: extend head, contralateral rotation of head Innervation: C spine |
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Longissimus Capitis |
Origin: articular processes of c4-c7, transverse processes of T1-T4 Insertion: Mastoid Action:extend head, ipsilateral neck flexion and rotation Innervation: C-spine |
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Spinalis Capitis |
Origin: arises with semispinalis capitis Insertion: occipital bone Action: extend head Innervation: C spine |
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Splenius Cervicis |
Origin: Spinous processes of T3-T6 Insertion: Transverse processes of C1-C4 Action: extend head, ipsilateral neck flexion and rotation Innervation: C spine |
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Illiocostalis Cervicis |
Origin: Ribs 1-6 Insertion: Transverse processes of C4-C6 Action: Extend, maintain and laterally flex spine Innervation: C/T spine |
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Illiocostalis Thoracis |
Origin: Ribs 7-12 Insertion: Ribs 1-6 Action: Extend, maintain and laterally flex spine Innervation: T spine |
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Illiocostalis Lumborum |
Origin: Iliac crest Insertion: Ribs 7-12 Action: Extend, maintain and laterally flex spine Innervation: L spine |
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Longissimus Cervicis |
Origin: Transverse processes of T4-T5 Insertion: Transverse processes of C2-C6 Action: Extend and laterally flex spine Innervation: spinal nerves |
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Longissimus Thoracis |
Origin: Transverse processes of lumbar vertebrae Insertion: Ribs 9,10, and transverse processes of all thoracic and superior lumbar vertebrae Action: extend and laterally flex spine Innervation: spinal nerves |
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Spinalis Cervicis |
Origin: ligamentum nuchae and spinous process of C7 Insertion: spinous process of axis Action: Extend spine Innervation: spinal nerves |
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Spinalis Thoracis |
Origin: Spinous processes of T10-L2 Insertion: Spinous process of superior throacic vertebrae Action: extend spine Innervation: spinal nerves |
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What are the muscles of the Erector Spinae Group |
Illiocostalis muscles (lateral), longissimus muscles (intermediate), and spinalis muscles (medial) |
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Semispinalis Cervicis |
Origin: transverse processes of T1-T5 Insertion: Spinous Processes C1-C5 Action: Extend spine, rotate head contralaterally Innervation: Spinal nerves |
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Semispinalis Thoracis |
Origin: Transverse processes of T6-T10 Insertion: Spinous processes of C6-T4 Action: extend spine, rotate head contralaterally Innervation: spinal nerves |
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Multifidus |
Origin: sacrum, illium, transverse processes of lumbar, thoracic and C4-C7 Insertion: spinous processes of a more superior vertebrae Action: extend and contralaterally flex/rotate spine Innervation: Spinal nerves |
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Rotatores |
Origin: transverse processes of all vertebrae Insertion: spinous process superior to origin Action: extend, contralateral rotation of spine Innervation: spinal nerves |
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Interspinales |
Origin: superior surface of all spinous processes Insertion: inferior surface of spinous process of vertebrae superior to origin Action: extend and stablize spine Innervation: spinal nerves |
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Intertransversarii |
Origin: transverse processes of all vertebrae Insertion: transverse process of vertebrae superior to the origin Action: stablize spine, extension, lateral flexion Innervation: Spinal nerves |
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Anterior Scalene |
Origin: Transverse processes of C3-C6 Insertion: First Rib Action: Elevate ribs Innervation: C spine |
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Middle Scalene |
Origin: Transverse processes of C2-C7 Insertion: First Rib Action: Lateral flexion and rotation of C spine Innervation: C spine |
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Posterior Scalene |
Origin: Transverse Processes of C4-C6 Insertion: 2nd Rib Action: Elevate 2nd rib, lateral flexion and rotation of c spine Innervation: C spine |
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Rectus Abdominus |
Origin: Pubic crest and pubic symphysis Insertion: Cartilage of ribs 5-7 and xiphoid process Action: flexion, compresses abdomen (increased pressure to aid in bodily functions) Innervation: T spine 7-12 |
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External Oblique |
Origin: Ribs 5-12 Insertion: Illiac crest and linea alba Action: flexion, lateral flexion and rotation Innervation: T7-T12, iliohypogastric nerve |
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Internal oblique |
Origin: iliac crest, linguinal ligament, thoracolumbar fascia Insertion: cartilage of ribs 7-10 and linea alba Action: flexion, lateral flexion and rotation Innervation: T8-T12, iliohypogastric nerve and ilioinguinal nerve |
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Transverse abdominus |
Origin: iliac crest, inguinal ligament, lumbar fascia, cartilage of ribs 5-10 Insertion: xiphoid process, linea alba, pubis Action: compresses abdomen Innervation: T8-T12, iliohypogastric nerve, ilioinguinal nerve |
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Quadratus Lumborum |
Origin: iliac crest, iliolumbar ligament Insertion: inferior border of rib 12 and L1-L4 Action: move/stablize 12th rib, lumbar extension, lateral flexion Innervation: T12, L1-L4 |
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Diaphragm |
Origin: xiphoid, inferior 6 ribs, lumbar vertebrae and their discs Insertion: Central tendon Action: inhalation/exhalation Innervation: phrenic nerve (contains axons for C3-C5) |
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External Intercostals |
Origin: interior border of rib above Insertion: Superior border of rib below Action: inhalation/exhalation Innervation: T2-T12 |
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Internal Intercostals |
Origin: superior border of rib below Insertion: inferior border of rib above Action: exhalation Innervation: T2-T12 |
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Innermost Intercostals |
Same as Internal Intercostal |
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Subclavius |
Origin: first rib Insertion: clavicle Action: depresses and anteriorly moves clavicle, stabilize pectoral girdle Innervation: subclavian nerve |
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Pectoralis Minor |
Origin: ribs 2-5
Insertion: coracoid process
Action: depresses scapula RMA: when scapula is fixed-elevate ribs
Innervation: Medial pectoral nerve
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Serratus Anterior |
Origin: superior 9 ribs
Insertion: medial border and inferior angle of scapula
Action: pulls scapula forward (protraction); doward or upward rotation of scapula (when upper or lower fibers contract individually) RMA: when scapula is fixed-elevate ribs
Innervation: Long thoracic nerve |
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What muscle is known as the boxers muscle? |
Serratus Anterior. Bc it is important in horizontal arm movements |
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Levator Scapulae |
Origin: Transverse processes of C1-C4
Insertion: superior angle of scapula
Action: Elevates scapula
Innervation: Dorsal scapular nerve, C3-C5 |
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Rhomboid Major |
Origin: Spines of T2-T5
Insertion: vertebral border of scapula inferior to spine
Action: elevates, retracts and ADDucts the scapula
Innervation: dorsal scapular nerve |
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Rhomboid Minor |
Origin: Spines of C4-T1
Insertion: vertebral border of scapular superior to spine
Action: elevates, retracts, and ADDucts scapula
Innervation: dorsal scapular nerve |
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Pectoralis Major |
Origin: Clavicle, sternum, cartilage of ribs 2-6
Insertion: anterior edge of the bicipital groove Action: ADDucts and medially rotates arm,
Innervation: medial and lateral pectoral nerves |
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Latissimus Dorsi |
Origin: spine of T7-L5, crests of sacrum and ilium, inferior 4 ribs
Insertion: bicipital groove
Action: ADDucts arm, depresses scapula |
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Deltoid |
Origin: lateral 1/3 of clavicle (anterior fibers), acromion of scapula (lateral fibers), spine of scapula (posterior fibers)
Insertion: deltoid tuberosity of humerus
Action: -Anterior Fibers: flex -Lateral FIbers: ABduct arm -Posterior Fibers: extend
Innervation: axillary nerve |
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Subscapularis |
Origin: subscapular fossa of scapula Insertion: lesser tubercle of humerus Action: medially rotates arm Innervation: upper and lower subscapular nerve |
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Supraspinatus |
Origin: supraspinous fossa of scapula
Insertion: under acromion to greater tubercle of humerus
Action: assists deltoid in ABDuction
Innervation: suprascapular nerve |
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Infraspinatus |
Origin: infraspinous fossa of scapula
Insertion: greater tubercle of humerus
Action: external rotation
Innervation: suprascapular nerve |
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Teres minor |
Origin: inferior lateral border of scapula Insertion: greater tubercle of humerus Action: laterally rotates and extend arm Innervation: axillary nerve |
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Corocobrachialis |
Origin: coracoid process
Insertion: middle of medial surface of humerus
Action: flexes and ADDucts arm
Innervation: musculocutaneous nerve |
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Biceps Brachii |
Origin: -Long Head: supraglenoid tubercle -Short Head: coracoid process
Insertion: radial tuberosity and bicipital aponeurosis
Action: flexion and supination, weak shoulder flexion
Innervation: musculocutaneous nerve |
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Brachialis |
Origin: distal anterior surface of humerus Insertion: ulnar tuberosity and coronoid process of ulna Action: flexion at elbow Innervation: musculocutaneous and radial nerves |
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Brachioradialis |
Origin: diatal humerus below detoid tuberosity
Insertion: superior to styloid process of radius
Action: flexion at elbow, supinate/pronate to neutral
Innervation: radial nerve |
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Triceps Brachii |
Origin: -Long Head: infraglenoid tubercle -Lateral Head: lateral and posterior surface of humerus -Medial Head: entire posterior surface of humerus inferior to a groove for the radial nerve Insertion: olecranon of ulna Action: elbow and shoulder extension Innervation: radial |
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Anconeus |
Origin: lateral epicondyle of humerus
Insertion: lateral aspect of proximal ulna
Action: extend elbow
Innervation: radial |
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Pronator teres |
Origin: medial epicondyle of humerus and coronoid process of ulna
Insertion: midlateral surface of radius
Action: pronation, weak elbow flexion
Innervation: median |
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Pronator Quadratus |
Origin: dital portion of shaft of ulna Insertion: distal portion of shaft of radius Action: pronation Innervation: median |
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Supinator |
Origin: lateral epicondyle of humerus, annular ligament and ridge near radial notch of ulna (supinator crest)
Insertion: lateral surface of proximal 1/3 of radius (above insertion for pronator teres)
Action: supination
Innervation: deep radial nerve |
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Flexor carpi radialis |
Origin: medial epicondyle of humerus Insertion: 2nd and 3rd metacarpals Action: wrist flexion and radial deviation Innervation: median nerve |
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Palmaris Longus |
Origin: medial epicondyle of humerus Insertion: flexor retinaculum and palmar aponeurosis Action: weak wrist flexion Innervation: median |
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Flexor carpi ulnaris |
Origin: medial epicondyle of humerus and superior posterior border of ulna
Insertion: pisiform, (hamate, and base of 5th metacarpal indirectly via piso ligaments)
Action: flexes wrist and ulnar deviation
Innervation: ulnar nerve |
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Flexor digitorum superficialis |
Origin: medial epicondyle of humerus, coronoid process of ulna, and anterior oblique line of radius
Insertion: middle phalanx of each finger (splits in 2 at each finger)
Action: flexes fingers (except distal segment) and wrist
Innervation: median nerve |
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Flexor Pollicis Longus |
Origin: anterior surface of radius and interosseous membrane Insertion: base of dital phalanx of thumb Action: Flexes distal phalanx of thumb Innervation: median nerve |
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Flexor digitorum profundus |
Origin: anterior medial surface of body of ulna
Insertion: base of distal phalanx of each finger (4 tendons)
Action: flexes all joints of fingers and wrist
Innervation: median, ulnar |
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Extensor carpi radialis longus |
Origin: lateral epicondylar ridge of humerus (below brachioradialis)
Insertion: 2nd metacarpal
Action: wrist extension and radial deviation
Innervation: radial |
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Extensor Carpi radialis brevis |
Origin: lateral epicondyle of humerus Insertion: 3rd metacarpal Action: wrist extension and radial deviation Innervation: radial |
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Extensor Digitorum |
Origin: lateral epicondlye of humerus Insertion: distal and middle phalanges of each finger Action: Extends all joints of fingers, and wrist Innervation: radial |
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Extensor digiti minimi |
Origin: lateral epicondyle of humerus Insertion: tendon of extensor digitorum on 5th phalanx Action: Extends proximal phalanx of little finger, extend wrist Innervation: deep radial |
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Extensor carpi ulnaris |
Origin: lateral epicondyle of humerus and posterior border of ulna Insertion: 5th metacarpal Action: wrist extension and ulnar deviation Innervation: deep radial |
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Abductor pollicis longus |
Origin: posterior surface or middle of radius and ulna and interosseous membrane Insertion: first metacarpal Action: abducts and extends thumb at carpometacarpal joint, radial deviation Innervation: deep radial |
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Extensor pollicis brevis |
Origin: posterior surface of middle of radius and interosseous membrane Insertion: base of proximal phalanx of thumb Action: extends thumb (except distal) and wrist Innervation: deep radial |
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Extensor Pollicis Longus |
Origin: posterior surface of middle of ulna and interosseous membrane Insertion: base of distal phalanx of thumb Action: extends thumb (except proximal) and wrist Innervation: deep radial |
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Extensor indicis |
Origin: posterior surface of ulna Insertion: tendon of extensor digitorum on index finger Action: extends all joints of index finger, and wrist Innervation: deep radial |
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Abductor Pollicis Brevis |
Origin: flexor retinaculum, scaphoid, and trapezium Insertion: lateral side of proximal phalanx of thumb Action: ABDucts thumb Innervation: median nerve |
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Opponens pollicis |
Origin: flexor retinaculum and trapezium Insertion: lateral side of first metacarpal Action: Thumb opposition Innervation: median |
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Flexor Pollicis Brevis |
Origin: flexor retinaculum, trapezium, capitate and trapezoid Insertion: lateral side of proximal phalanx of thumb Action: flexes thumb Innervation: median and ulnar nerves |
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Adductor pollicis |
Origin: -Oblique Head: capitate, 2nd/3rd metacarpals -Transverse Head: 3rd metacarpal Insertion: medial side of proximal phalanx of thumb Action: ADDucts thumb Innervation: ulnar |
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Abductor digit Minini |
Origin: pisiform and tendon of flexor carpi ulnaris Insertion: medial side of proximal phalanx of little finger Action: ABDucts the flexes little finger at metacarpophalangeal joint Innervation: ulnar |
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Flexor digiti minimi brevis |
Origin: flexor retinaculum and hamate Insertion: medial side of proximal phalanx of little finger Action: flexes little finger Innervation: ulnar |
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Opponens digiti minimi |
Origin: flexor retinaculum and hamate Insertion: medial side of 5th metacarpal Action: opposition of little finger Innervation: ulnar |
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Lumbricals (hands) |
Origin: lateral sides of tendons and flexor digitorum profundus of each finger Insertion: lateral sides of tendons of extensor digitorum on proximal phalanges of each finger Action: flex fingers at metacarpophalangeal and extend at interphalangeal joints Innervation: median and ulnar |
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Palmar interossei |
Origin: sides of shafts of metacarpals of all digits (except middle) Insertion: sides of bases of proximal phalanges of each finger Action: ADDucts and flexes each finger (except middle) at the metacarpaphalangeal joint and extends at interphalangeal Innervation: ulnar |
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Dorsal interossei |
Origin: adjacent sides of metacarpals Insertion: proximal phalanx of each finger Action: ABDuct and flex fingers 2-4 at metacarpophlangeal; extend each finger at interphalangeal Innervation: ulnar |
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Illiopsoas |
Origin: -Psoas Major: transverse process and bodies of lumbar vertebrae -Illiacus: Illiac fossa and sacrum Insertion: lesser trochanter of femur Action: flex and laterally rotate hip Innervation: -Psoas Major: L2/L3 -Illiacus: femoral nerve |
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Gluteus Maximus |
Origin: iliac crest, sacrum, coccyx, and aponeurosis of sacrospinalis Insertion: illiotibial tract of fascia lata and superior lateral part of linea aspera (gluteal tuberosity) Action: extends and laterally rotates thigh at hip |
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Gluteus Medius |
Origin: illium Insertion: greater trochanter of femur Action: ABDucts and medially rotates thigh at hip joint Innervation: superior gluteal nerve |
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Gluteus Minimus |
Origin: illium Insertion: greater trochanter of femur Action: ABDucts and medially rotates thigh at hip Innervation: superior gluteal nerve |
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Tensor fascia latae |
Origin: illiac crest Insertion: tibia by way of iliotibial tract Action: flexes and ABDucts hip Innervation: superior gluteal nerve |
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Piriformis |
Origin: anterior sacrum Insertion: superior border of greater trochanter of femur Action: ABDucts and laterally rotates thigh at hip Innervation: S1 |
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Obturator Internus |
Origin: inner surface of obturator foramen, pubis and ischium Insertion: medial surface of greater trochanter of femur Action: ABDucts and laterally rotates thigh at hip Innervation: nerve to obturtator internus |
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Obturator externus |
Origin: outer surface of obturator membrane Insertion: trochanteric fossa of femur Action: ABDucts and laterally rotates thigh at hip Innervation: obturator nerve |
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Superior Gemellus |
Origin: ischial spine Insertion: medial surface of greater trochanter of femur Action: ABDucts and laterally rotates thigh at hip Innervation: nerve of obturator internus |
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Inferior Gemellus |
Origin: Ischial tuberosity Insertion: medial surface of greater trochanter of femur Action: ABDucts and laterally rotates thigh at hip Innervation: nerve to quadratus femoris |
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Quadratus Femoris |
Origin: Ischial tuberosity Insertion: quadrate tubercle on posterior femur Action: Stabilizes and laterally rotates hip Innervation: nerve to quadratus femoris |
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Adductor Longus |
Origin: pubic crest and pubic symphysis Insertion: linea aspera of femur Action: ADDucts, rotates and flexes thigh at hip RMA: extends hip, medial rotation of leg Innervation: obturator |
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Adductor Brevis |
Origin: inferior ramus of pubis Insertion: superior half of linea aspera of femur Action: ADDucts, rotates and flexes thigh at hip RMA: extends hip, medial rotation of leg Innervation: obturator |
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Adductor Magnus |
Origin: inferior ramus of pubis and ischium to ischial tuberosity Insertion: linea aspera of femur Action: ADDucts, rotates and flexes thigh at hip -posterior: extends and medially rotates Innervation: obturator and sciatic |
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Pectineus |
Origin: superior ramus of pubis Insertion: pectineal line of femur btw lesser trochanter and linea aspera Action: ADDucts and flexes hip Innervation: femoral |
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Gracilis |
Origin: body and inferior ramus of pubis Insertion: medial surface of body of tibis Action: ADDucts, and medially rotates hip, flexes knee Innervation: obturator |
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Rectus Femoris |
Origin: anterior inferior illiac spine Insertion: patella via quad tendon then tibial tuberosity via patella ligament Action: hip flexion, knee extension Innervation: femoral |
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Vastus Lateralis |
Origin: greater trochanter and linea aspera of femur Insertion: patella via quad tendon then tibial tuberosity via patella ligament Action: extend knee Innervation: femoral |
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Vastus Medialis |
Origin: linea aspera of femur Insertion: patella via quad tendon then tibial tuberosity via patella ligament Action: extends knee Innervation: femoral |
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Vastus Intermedius |
Origin: anterior and lateral surface of body of femur Insertion: patella via quad tendon then tibial tuberosity via patella ligament Action: extends knee Innervation: femoral |
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Sartorius |
Origin: anterior superior iliac spine Insertion: medial surface of body of tibia Action: weak knee flexion; weak hip flexion, abduction and lateral rotation Innervation: femoral |
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Biceps Femoris |
Origin: -long head: ischial tuberosity -short head: linea aspera of femur Insertion: head of fibula and lateral condyle of tibia Action: flexes knee, extends hip Innervation: tibial and common fibular nerves from the sciatic |
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Semitendinosus |
Origin: ischial tuberosity Insertion: proximal part of medial surface of shaft of tibia Action: flexes knee, extends hip Innervation: tibial from sciatic |
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Semimembranosus |
Origin: ischial tuberosity Insertion: medial condyle of tibia Action: flexes knee, extends hip Innervation: tibial from sciatic |
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Tibialis Anterior |
Origin: lateral condyle and body of tibia, and interosseous membrane Insertion: first metatarsal, first cuneiform Action: dorsiflexes and inverts foot Innervation: Deep fibular (peroneal) nerve |
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Extensor Hallucis Longus |
Origin: anterior surface of fibula, and interosseous membrane Insertion: distal phalanx of great toe Action: dorsiflexes foot and extends proximal phalanx of great toe Innervation: deep fibular (peroneal) nerve |
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Extensor Digitorum Longus |
Origin: lateral condyle of tibia, anterior surface of fibula, and interosseous membrane Insertion: middle and distal phalanges of toes 2-5 Action: dorsiflexes foot, extends toes Innervation: deep fibular (peroneal) nerve |
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Fibularis (Peroneus) Tertius |
Origin: distal 1/3 of fibula and interosseous membrane Insertion: base of 5th metatarsal Action: dorsiflexes and everts foot |
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Fibularis (peroneus) longus |
Origin: head and body of fibula Insertion: first metatarsal and first cuneiform Action: plantar flexion, eversion Innervation: superficial fibular (peroneal) nerve |
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Fibularis (peroneous) brevis |
Origin: body of fibula Insertion: base of 5th metatarsal Action: plantar flexion, eversion Innervation: superficial fibular (peroneal) nerve |
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Gastrocnemius |
Origin: lateral and medial condyles of femur and capsule of knee Insertion: calcaneus via achilles tendon Action: plantar flexes ankle, flexes knee Innervation: tibial nerve |
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Soleus |
Origin: head of fibula and medial border of tibia Insertion: calcaneus via achilles tendon Action: plantar flexion Innervation: tibial nerve |
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Plantaris |
Origin: femur superior of lateral condyle Insertion: calcaneus via achilles tendon Action: plantar flexes ankle, flexes knee Innervation: tibial nerve |
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Popliteus |
Origin: lateral condyle of femur Insertion: proximal tibia Action: knee flexion, medially rotates tibia to unlock extended knee Innervation: tibial nerve |
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Tibialis Posterior |
Origin: tibia, fibula, and interosseour membrane Insertion: 2nd-4th metatarsals, navicular, all 3 cuneiforms, and cuboid Action: plantar flexion, inversion Innervation: tibial |
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Flexor Digitorum Longus |
Origin: posterior surface of tibia Insertion: distal phalanges of toes 2-5 Action: plantar flexion, flexes toes 2-5 Innervation: tibial |
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Flexor Hallicus Longus |
Origin: inferior 2/3 of fibula Insertion: distal phalanx of great toe Action: plantar flexion, flexes great toe Innervation: Tibial |
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Extensor Hallucis Brevis |
Origin: calcaneous and inferior extensor retinaculum Insertion: proximal phalanx of great toe Action: extends great toe Innervation: deep fibular (peroneal) nerve |
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Extensor Digitorum Brevis |
Origin: calcaneous and inferior extensor retinaculum Insertion: middle phalanges of toes 2-4 Action: extends toes 2-4 at interphalangeal joint Innervation: deep fibular (peroneal) nerve |
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Abductor Hallucis |
Origin: calcaneous, plantar aponeurosis, and flexor retinaculum Insertion: medial side of proximal phalanx of great toe with the tendon of the flexor hallicus brevis Action: ABDucts and flexes great toe Innervation: medial plantar |
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Flexor Digitorum Brevis |
Origin: calcaneous, plantar aponeurosis, and flexor retinaculum Insertion: sides of middle phalanx of toes 2-5 Action: flexes toes 2-5 at proximal interphalangeal and metatarsaophalangeal joints Innervation: medial plantar |
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Abductor Digiti Minimi |
Origin: calcaneous, plantar aponeurosis, and flexor retinaculum Insertion: lateral side of proximal phalanx of little toe with the tendon of the flexor digiti minimi brevis Action: ABDucts and flexes little toe Innervation: Lateral plantar nerve |
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Quadratus Plantae |
Origin: calcaneuous Insertion: tendon of flexor digitorum longus Action: assists flexor digitorum longus to flex toes 2-5 Innervation: lateral plantar nerve |
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Lumbricals (feet) |
Origin: tendons of flexor digitorum longus Insertion: tendons of extensor digitorum longus on proximal phalanges of toes 2-5 Action: extend toes at interphalangeal joints and flex toes at metatarsophalangeal joint Innervation: medial and lateral plantar nerves |
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Flexor Hallucis Brevis |
Origin: cuboid and third (lateral) cuneiform Insertion: medial and lateral sides of proximal phalanx of great toe via a tendon containing a sesamoid bone Action: flexes great toe at metatarsophalangeal Innervation: medal plantar |
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Adductor Hallucis |
Origin: metatarsals 2-4, ligaments of 3-5 metatarsophalangeal joints, and tendon of fibularis longus Insertion: lateral side of proximal phalanx of great toe Action: ADDucts and flexes great toe at metatarsophalangeal Innervation: lateral plantar |
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Flexor Digiti Minimi Brevis |
Origin: metatarsal 5 and tendon of fibularis longus Insertion: lateral side of proximal phalanx of little toe Action: flexes little toe at metatarsophalangeal Innervation: lateral plantar |
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Dorsal Interossei |
Origin: adjacent side of all metatarsals Insertion: Proximal phalanges: both sides of toe 2 and lateral side of toes 3 and 4 Action: ABDuct and flex toes 2-4 at metatarsophalangeal and extend toes at interphalangeal innervation: lateral plantar |
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Plantar Interossei |
Origin: metatarsals 3-5 Insertion: medial side of proximal phalanges of toes 3-5 Action: ADDucts and flex proximal metatarsophalangeal and extend toes to interphalangeal Innervation: lateral plantar |
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Long head of the triceps arises from |
Infraglenoid tubercle |
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Long head of the biceps arises from |
The supraglenoid tubercle |
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Muscles of the shoulder joint |
Subscapularis, supraspinatus, infraspinatus, teres minor |
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Teres Major |
Origin: lower lateral border of scapula Insertion: posterior lip of bicipital groove Action: ADDuctor of humerus Innervation: lower subscapular nerve |
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Omohyoid |
Origin: hyoid bone Insertion: upper edge of spine of scapula Action: depresses hyoid bone and larynx Innervation: spinal roots c1-c3 |
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In what position is the biceps a more efficient elbow flexor? |
When the arm is pronated bc in this position it is fully stretched when it starts it's action |
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Hi eric |
Whsssup |
