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80 Cards in this Set
- Front
- Back
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name the muscles attaching the axial skeleton to the shoulder girdle
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trapezius, levator scapulae, rhomboids (minor and major), serratus anterior, and pectoralis minor
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trapezius
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3 parts:
o: ligamentum nuchae (cervical vertebrae) C7-T12 spinous processes i: spine of scapula, acromion process, lateral 1/3 of clavicle a: elevation and retraction N: cranial n. 11 a.k.a. spinal accessory nerve |
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levator scapulae
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O:transverse processes of C1-C4
I:medial border of scapula A: elevation of scapula N: dorsal scapula n. |
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rhomboids (minor and major)
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OMinor:C7-T1spinous processes
OMajor:T2-T5spinous processes I: medial border of scapula A: retration N: dorsal scapula nerve |
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serratus anterior
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O:(deep)lateral parts of ribs 1-8
I:medial border of scapula A: protraction N: long thoracic nerve |
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pectoralis minor
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O:upper ribs 3-5
I:coracoid process of scapula A:protraction N:medial pectoral nerve |
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What muscle group all insert on the humerus?
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pectoralis major, latissimus dorsi, deltoid, subscapularis, supraspinatus, infraspinatus, teres minor, teres major
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pectoralis major
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o:medial 1/2 of clavicle and whole part of sternum
I:greater tubercle A:adduction,flexion, and internal rotation at glenohumeral joint N:medial and lateral pectoral n. |
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latissimus dorsi
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O:axial skeleton-spinous processes T6-T12
I: floor of bicipital groove on anterior side A:adductor, extensor, internal rotator N: thoracodorsal n. |
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deltoid
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3 parts
O:spine of scapula, acromion process, clavicle (latter 1/3) I:deltoid tuberosity A:ante-flexion and internal rotation.middle-abduction.post-extensor and external rotator N: axillary n. |
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subscapularis
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O:subscapular fossa
I:lesser tubercle of humerus A:internal rotation N: upper and lower subscapular n. |
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supraspinatus
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O:supraspinatus fossa
I: greater tubercle A:weak abduction (bc puts humerous closer to glenoid fossa) N:suprascapular n. |
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infraspinatus
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O:infraspinous fossa
I:greater tubercle A:external rotation N:suprascapular n. |
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teres minor
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O:lateral border of scapula
I:greater tubercle A:external rotation N:axillary nerve |
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what are the anterior muscles of the arm?
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coracobrachialis, biceps brachii, brachialis
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coracobrachialis
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O:coracoid process of scapula
I:medial part of humerus A:flexion, adduction of shoulder N:musculocutaneous n. |
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biceps brachii
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Olong:supraglenoid tubercle
Oshort:coracoid process I:radial tuberosity A:long shoulder flexion A:flexes elbow and supinates forearm N:musculocutaneous n. |
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brachialis
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O:lower half of humerus
I:ulnar tuberosity A:flexes elbow N: musculocutaneous n. |
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what are the posterior muscles of the arm?
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triceps brachii and anconeus
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triceps brachii
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Olong:infraglenoid tubercle
Olateral:posterior part of humerus Omedial:posterior part of humerus I:olecranon process of ulna A:extension of elbow and shoulder (long Head) N:radial n |
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anconeus
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O:lateral epicondyle of humerus
I:olecranon A:extension of elbow N:radial n. |
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what are the anterior superficial forearm muscles?
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pronator teres,flexor carpi radialis, palmaris longus, flexor carpi ulnaris, flexor digitorum superficialis
all originate on medial epicondyle and flex |
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pronator teres
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I: inserts on radius
A:pronation of forearm N:medial nerve |
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flexor carpi radialis
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obliquely into carpal boes
A:flexion and abdcution of wrist (radial deviation) N:median nerve |
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palmaris longus
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inserts into base of hand-fibrous tissue
a:flexion of wrist N:median n |
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flexor carpi ulnaris
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inserts into medial side of carpal bones
A:flexion of wrist and adduction (ulnar deviation) |
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flexor digitorum superficialis
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digits 2-5 to base of middle phalanx
A:flexion all but not distal IP joints N:median nerve |
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What are the deep anterior forearm muscles?
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flexor digitorum profundus, flexor pollicis longus, and pronator quadratus
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flexor digitorum profundus
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base of distal phalanx; four tendons
A:flexion all even distal IP N: radial half,tendons 1 and 2 digits 2 and 3--median nerve ulnar half, tendons 3 and 4, digits 4 and 5--ulnar nerve |
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flexor pollicis longus
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membrane into thumb
A:flexion of wrist, carpometa., and MCP joints N:median nerve |
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pronator quadratus
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pronation; median nerve
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what are the superficial posterior forearm muscles?
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brachioradialis,extensor carpi radialis longus and brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris
all come from lateral epicondyle |
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brachioradialis
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inserts into arm-radius
A:flexor of elbow N:radial n |
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extensor carpi radialis longus and brevis
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insert into carpals
a:extension, abduction N:radial nerve |
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extensor digitorum
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extends digits and wrist--even distal IP joints
N:radial nerve |
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extensor digiti minimi
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5th digit
a:extensor N:radial nerve |
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extensor carpi ulnaris
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a:extensionof wrist and adduction (ulnar deviation)
N:radial nerve |
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what are the deep posterior forearm muscles?
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abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus, extensor indicis, supinator
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abductor pollicis longus
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a: abducts and extends thumb at carpometacarpal joint
N:radial nerve |
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extensor pollicis brevis
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thumb at base of proximal phalanx
A:extension but not at distal joint N:radial nerve |
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extensor pollicis longus
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base of distal phalangeal joint
a: extension of thumb at all joints N:radial nerve |
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extensor indicis
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extends all joints
N:radial nerve |
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supinator
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a:supination
n:radial nerve lateral epicondyle...wraps around radius |
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where is the anatomical snuff box?
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between the extensor pollicis longus and abductor pollicis longus . floor is the deep radial artery before it becomes the deep palmar arch (extensor pollicis brevis inside)
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what are the four thenar muscles?
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abductor pollicis brevis, flexor pollicis brevis, opponens pollicis, and adductor pollicis muscle
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what are the three hypothenar muscles?
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abductor digiti minimi, flexor digiti minimi, opponens digiti minimi
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abductor pollicis brevis
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O:below 1st metacarpal
I:base of 1st phalanx A:abductor @carpometacarpal joint N:median nerve |
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flexor pollicis brevis
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I:base of pollicis
A:flexio N:median nerve |
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opponens pollicis
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O:deep to abductor pollicis brevis
A:abduction and flexion of thumb @carpometacarpal joint |
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adductor pollicis
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adducts thumb; fibers run obliquely
N:median nerve-lower muscles ulnar nerve-more distal muscles |
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abductor digiti minimi
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a:abduction of 5th digit
n: ulnar nerve |
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flexor digiti minimi
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a:flexion
N:ulnar nerve |
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opponens digiti minimi
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a:flexes and adducts metacarpophalangeal joint
N:ulnar nerve |
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lumbricales
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4 muscles..attach to digits 2,3,4, and 5
O:flexor digitorum profundus I:distal phalanx a:flex metacarpophalangeal joint while extending IP joint N:median nerve-lumbricales 1 and 2 on digits 2 and 3 ulnar nerve-muscle.3 and 4 on digits 4 and 5 |
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dorsal interossei
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4 muscles-bipennate muscles
a:abduction of digits 2,3 (2 muscles) and 4 N:ulnar nerve |
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palmar interossei
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3 muscles-inner side of digits
a: adduction of digits 2,4,and 5 N:ulnar nerve |
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the radial artery is lateral to what muscle at the wrist from an anterior view?
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flexor carpi radialis tendon
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the ulnar artery and nerve are lateral to what tendon at the wrist from an anterior view?
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they are lateral to the flexor carpi ulnaris tendon
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what muscle elevates the scapula?
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trapezius and levator scapulae
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what muscles retract the scapula?
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trapezius and rhomboids
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what muscles protract the scapula?
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serratus anterior and pectoralis minor
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abductor digiti minimi
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A:abducts 5th digit @MCP jt
n:ulnar nerve |
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flexor digiti minimi
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a:flexion at 5th digit @MCP jt
N:ulnar nerve |
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opponens digiti minimi
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A:flexes and adducts @mcp jt
n:ulnar nerve |
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lumbricales
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4 muscles
O:tendon of flexor digitorum profundus I:extends all the way to distal phalanx A:flex @MCP while extend @IP N:1 and 2 (digits 2 and3) get median nerve 3 and 4 (digits 4 and 5)-ulnar nerve |
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what muscles flex the scapula?
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pectoralis major, deltoid, long head of biceps brachii, and coracobracialis
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what muscles extend the scapula?
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latissimus dorsi, deltoid, teres major, triceps brachii (long head)
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what two things are contained in the radial groove?
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the deep brachial artery and the radial nerve
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which muscles internally rotate the scapula?
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pectoralis major, latissimus dorsi, deltoid, teres major, subscapularis
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external rotation of the scapula
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infraspinatus, deltoid, teres minor
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abduction of scapula
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deltoid, supraspinatus
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adduction of scapula
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pectoralis major, latissimus dorsi, coracobrachialis
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flexion of elbow
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brachialis, biceps brachii (long and short), brachioradialis
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supinators
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biceps brachii and supinator
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pronators
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pronator teres, pronator quadratus
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extension of elbow
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triceps brachii, anconeus
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abduction of wrist
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flexor carpi radialis, extensor carpi radialis longus and brevis
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adduction of wrist
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flexor carpi ulnaris, extensor carpi ulnaris
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flexion at wrist
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flexor carpi radialis, palmaris longus, flexor carpi ulnaris, flexor digitorum superficialis, flexor digitorum profundus, flexor pollicis longus
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extension of wrist
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extensor carpi radialis (longus and brevis), extensor carpi ulnaris, extensor digitorum, extensor digiti minimi, entensor indicis, abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus
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