Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
296 Cards in this Set
- Front
- Back
|
gastrocnemius origin
|
Medial and lateral condyles of femur
|
|
|
gastrocnemius insertion
|
Posterior calcaneus
|
|
|
gastrocnemius innervation
|
Tibial
|
|
|
gastrocnemius action
|
plantar flex the ankle joint
supinates the subtalar joint also flexes the knee joint. |
|
|
Soleus origin
|
Posterior fibula
proximal tibia |
|
|
Soleus insertion
|
Posterior calacaneus
|
|
|
Soleus innervation
|
Tibial
|
|
|
Soleus action
|
plantar flex the ankle joint
supinates the subtalar joint |
|
|
Fibularis (Peroneus) longus origin
|
Lateral condyle of tibia
fibular head |
|
|
Fibularis (Peroneus) longus insertion
|
Base of 1st metatarsal and cuneiform
|
|
|
Fibularis (Peroneus) longus innervation
|
Fibular (Peroneal) – Superficial Branch
|
|
|
Fibularis (Peroneus) longus action
|
plantarflex at the ankle joint
pronate at the subtalar joint depresses the head of the 1st metatarsal |
|
|
Fibularis (Peroneus) brevis origin
|
distal 2/3 of the lateral fibula
|
|
|
Fibularis (Peroneus) brevis insertion
|
5th metatarsal tuberosity
|
|
|
Fibularis (Peroneus) brevis innervation
|
Fibular (Peroneal) – Superficial Branch
|
|
|
Fibularis (Peroneus) brevis action
|
plantarflex at the ankle joint
pronate at the subtalar joint |
|
|
Fibularis (Peroneus) Tertius origin
|
Distal 1/3 of anterior fibula
|
|
|
Fibularis (Peroneus) Tertius insertion
|
Dorsal base of 5th metatarsal
|
|
|
Fibularis (Peroneus) Tertius innervation
|
Fibular (Peroneal) – Deep Branch
|
|
|
Fibularis (Peroneus) Tertius action
|
Dorsi flexes ankle joint
pronates the subtalar joint |
|
|
Tibialis posterior origin
|
Lateral posterior tibia
|
|
|
Tibialis posterior insertion
|
Navicular tuberosity
|
|
|
Tibialis posterior innervation
|
Tibial
|
|
|
Tibialis posterior action
|
Plantar flexes the ankle joint
supinates the subtalar joint |
|
|
Tibialis anterior origin
|
Lateral condyle
proximal lateral tibia |
|
|
Tibialis anterior insertion
|
Medial cuneiform
base of 1st metatarsal |
|
|
Tibialis anterior innervation
|
Fibular (Peroneal) – Deep branch
|
|
|
Tibialis anterior action
|
Dorsi flexes the ankle joint
supinates the subtalar joint |
|
|
Extensor hallucis longus origin
|
Middle ½ of anterior fibula
|
|
|
Extensor hallucis longus insertion
|
Base of distal phalanx of great toe
|
|
|
Extensor hallucis longus innervation
|
Deep Fibular (Peroneal) – Deep Branch
|
|
|
Extensor hallucis longus action
|
Extends the MP and IP joints of the great toe
Dorsiflexes the ankle joint. |
|
|
Extensor digitorum longus origin
|
Lateral condyle of tibia
proximal ¾ of body of fibula |
|
|
Extensor digitorum longus insertion
|
Into extension expansion of toes 2-4
|
|
|
Extensor digitorum longus innervation
|
Fibular (Peroneal) – Deep Branch
|
|
|
Extensor digitorum longus action
|
Extends MP and with the extensor expansion assists in extending the PIP and DIP joints
dorsiflexes ankle and pronates the subtalar joint. |
|
|
Flexor digitorum longus origin
|
Middle 2/3 posterior tibia
|
|
|
Flexor digitorum longus insertion
|
Bases of distal phalanges of toes 2 – 5
|
|
|
Flexor digitorum longus innervation
|
Tibial
|
|
|
Flexor digitorum longus action
|
Flexes PIP, DIP, MP of 2-5 toes
plantar flexes the ankle joint and supinates the subtalar joint. |
|
|
Flexor hallucis longus origin
|
Distal 2/3 posterior fibula
|
|
|
Flexor hallucis longus insertion
|
Base of distal phalanx of great toe
|
|
|
Flexor hallucis longus innervation
|
Tibial
|
|
|
Flexor hallucis longus action
|
Flexes IP and MP joint of the great toe
plantar flexes the ankle supinates the subtalar joint. |
|
|
Gluteus Maximus origin
|
Posterior gluteal line of the ilium
posterior lower sacrum coccyx |
|
|
Gluteus Maximus insertion
|
Into iliotibial tract and gluteal tuberosity of the femur
|
|
|
Gluteus Maximus innervation
|
Inferior Gluteal
|
|
|
Gluteus Maximus action
|
Extension and lateral rotation of the femur at the hip joint
upper fibers- abduct the femur lower fibers- adduct the femur at the hip joint. |
|
|
Gluteus Medius origin
|
Entire external surface of the ilium between the anterior and inferior gluteal lines at the iliac crest
|
|
|
Gluteus Medius insertion
|
Greater trochanter of the femur
|
|
|
Gluteus Medius innervation
|
Superior gluteal
|
|
|
Gluteus Medius action
|
Anterior fibers: flexion, abduction and internal rotation of the femur of the hip joint.
Middle fibers: Abduction of the hip joint. Posterior fibers: extension, abduction and external rotation of the hip joint. |
|
|
Gluteus minimus origin
|
External surface of the ilium between the anterior and inferior gluteal lines
|
|
|
Gluteus minimus insertion
|
Greater trochanter of the femur
|
|
|
Gluteus minimus innervation
|
Superior gluteal
|
|
|
Gluteus minimus action
|
Flexion, abduction and internal rotation of the femur of the hip joint.
|
|
|
Tensor Fascia Latae origin
|
ASIS (anterior superior iliac spine)
|
|
|
Tensor Fascia Latae insertion
|
Iliotibial tract which inserts into the patella, tibial condyle, and head of fibula
|
|
|
Tensor Fascia Latae innervation
|
Superior gluteal
|
|
|
Tensor Fascia Latae action
|
Flexion, abduction and internal rotation of the femur.
Adds lateral stability to the knee joint. |
|
|
Sartorius origin
|
ASIS
|
|
|
Sartorius insertion
|
Proximal medial tibia near anterior border
|
|
|
Sartorius innervation
|
Femoral
|
|
|
Sartorius action
|
Flexes, abducts and externally rotates femur at the hip joint
Flexes and internally rotates the knee joint. |
|
|
Hip Adductors origin
1. Pectineus 2. Adductor Magnus 3. Gracilis 4. Adductor Brevis 5. Adductor Longus |
the pubic ramus and symphysis pubis
|
|
|
Hip Adductors insertion
1. Pectineus 2. Adductor Magnus 3. Gracilis 4. Adductor Brevis 5. Adductor Longus |
-Pectineal line
-linea aspera -adductor tubercle -medial condyle. gracilis- attaches into the medial surface of the tibia proximal to the semitendinosus and lateral to the sartorius. |
|
|
Hip Adductors innervation
1. Pectineus 2. Adductor Magnus 3. Gracilis 4. Adductor Brevis 5. Adductor Longus |
Pectineus is femoral and obturator.
Thhe adductor magnus is obturator and sciatic. The rest are obturator. |
|
|
Hip Adductors action
1. Pectineus 2. Adductor Magnus 3. Gracilis 4. Adductor Brevis 5. Adductor Longus |
-Adduction of the femur at the hip joint
-these muscles are internal rotators -In flexion these muscles can extend to neutral -In extension these muscles can flex to neutral. The gracilis, being a two joint muscle, can also flex and medially rotate the knee joint. |
|
|
Small short hip Lateral rotators origin
1. Piriformis 2. Quadratus femoris 3. Obturator Internus 4. Obturator Externus 5. Gemellus Superior 6. Gemellus inferior |
ischium and sacrum
ischial tuberosity rami of pubis. |
|
|
Small short hip Lateral rotators insertion
1. Piriformis 2. Quadratus femoris 3. Obturator Internus 4. Obturator Externus 5. Gemellus Superior 6. Gemellus inferior |
Femur, around the greater trochanter, quadrate line, and trochanteric fossa.
|
|
|
Small short hip Lateral rotators innervation
1. Piriformis 2. Quadratus femoris 3. Obturator Internus 4. Obturator Externus 5. Gemellus Superior 6. Gemellus inferior |
Sacral plexus
Obturator Externus is the Obturator. |
|
|
Small short hip Lateral rotators action
1. Piriformis 2. Quadratus femoris 3. Obturator Internus 4. Obturator Externus 5. Gemellus Superior 6. Gemellus inferior |
Primarily external rotation of the femur at the hip, although we will learn other actions of these muscles in special positions.
|
|
|
Psoas Minor origin
|
Sides of bodies of T12 and L1
|
|
|
Psoas Minor insertion
|
Ilium and Iliac fossa
|
|
|
Psoas Minor innervation
|
Lumbar Plexus
|
|
|
Psoas Minor action
|
Brings pelvis toward lumbar spine (lumbar flexion)
|
|
|
Psoas major origin
|
Transverse processes of all lumbar vertebrae
|
|
|
Psoas major insertion
|
Lesser trochanter of femur
|
|
|
Psoas major innervation
|
Lumbar plexus
|
|
|
Psoas major action
|
Iliacus and psoas major act together!!!
These muscles provide the majority of hip flexion when the leg is free (kicking, running, walking). When the leg is on the ground or stabilized this muscle flexes the spine toward the leg (as in a sit-up). Unilaterally can be a lateral trunk flexor. |
|
|
Iliacus origin
|
Superior 2/3 of iliac fossa
internal lip of iliac crest |
|
|
Iliacus insertion
|
Lateral side of the tendon of psoas major just distal to lesser trochanter
|
|
|
Iliacus innervation
|
femoral
|
|
|
Iliacus action
|
Iliacus and psoas major act together!!!
These muscles provide the majority of hip flexion when the leg is free (kicking, running, walking). When the leg is on the ground or stabilized this muscle flexes the spine toward the leg (as in a sit-up). Unilaterally can be a lateral trunk flexor |
|
|
Vastus lateralis origin
|
Lateral proximal femur.
|
|
|
Vastus lateralis insertion
|
into proximal border of patella and then via the patellar tendon into the tibial tuberosity
|
|
|
Vastus lateralis innervation
|
Femoral
|
|
|
Vastus lateralis action
|
Knee extension
|
|
|
Vastus Medialis origin
|
Distal intertrochanteric line
|
|
|
Vastus Medialis insertion
|
into proximal border of patella and then via the patellar tendon into the tibial tuberosity
|
|
|
Vastus Medialis innervation
|
Femoral
|
|
|
Vastus Medialis action
|
Knee extension
|
|
|
Vastus intermedius origin
|
Anterior and lateral proximal 2/3 body of femur
|
|
|
Vastus intermedius insertion
|
into proximal border of patella and then via the patellar tendon into the tibial tuberosity
|
|
|
Vastus intermedius innervation
|
Femoral
|
|
|
Vastus intermedius action
|
Knee extension
|
|
|
Rectus Femoris origin
|
AIIS and acetabulum
|
|
|
Rectus Femoris insertion
|
into proximal border of patella and then via the patellar tendon into the tibial tuberosity
|
|
|
Rectus Femoris innervation
|
Femoral
|
|
|
Rectus Femoris action
|
Knee extension
also flexes the hip joint |
|
|
Semi membranosus origin
|
Ischial tuberosity
|
|
|
Semi membranosus insertion
|
Postero medial medial condyle of tibia
|
|
|
Semi membranosus innervation
|
Sciatic (Tibial branch)
|
|
|
Semi membranosus action
|
Knee flexion and hip extension
medially rotate the hip and the knee joint |
|
|
Semi tendinosus origin
|
ischial tuberosity
|
|
|
Semi tendinosus insertion
|
Proximal medial body of tibia
|
|
|
Semi tendinosus innervation
|
Sciatic (Tibial branch)
|
|
|
Semi tendinosus action
|
Knee flexion and hip extension
medially rotate the hip and the knee joint |
|
|
Biceps femoris origin
|
short head originates on the femur
long head from the ischial tuberosity |
|
|
Biceps femoris insertion
|
Lateral side of head of fibula
lateral condyle of tibia. |
|
|
Biceps femoris innervation
|
Short head- sciatic (Peroneal branch)
Long head- Sciatic (Tibial branch) |
|
|
Biceps femoris action
|
short head- only does knee flexion.
Long head- Knee flexion and hip extension laterally rotate the hip joint and the knee joint |
|
|
Popliteus origin
|
Anterior lateral condyle of femur
|
|
|
Popliteus insertion
|
Soleal line on the posterior surface of the tibia
|
|
|
Popliteus inenrvation
|
Tibial
|
|
|
Popliteus action
|
internally rotates the tibia on the femur
|
|
|
Serratus anterior origin
|
Outer surfaces and sup borders of upper 8-9 ribs
|
|
|
Serratus anterior insertion
|
Costal surface of med border of scapula
|
|
|
Serratus anterior innervation
|
Long thoracic N
|
|
|
Serratus anterior action
|
Scapular protraction (abduction)
Scapular upward rotation when used with the traps. |
|
|
Upper trap origin
|
Ext occipital protuberance
1/3 of superior nuchal line Spinous process of C7 |
|
|
Upper trap insertion
|
Lat 1/3 of clavicle
acromion process |
|
|
Upper trap innervation
|
Spinal Accessory
|
|
|
Upper trap action
|
Upward rotation of scapula
Elevation of scapula |
|
|
Middle trap origin
|
Spinous processes of T1-5
|
|
|
Middle trap insertion
|
Spine of scapula (superior lip)
|
|
|
Middle trap innervation
|
Spinal Accessory
|
|
|
Middle trap action
|
Adduction (retraction) of scapula
|
|
|
lower trap origin
|
Spinous processes of T6-12
|
|
|
lower trap insertion
|
Apex of spine of scapula
|
|
|
lower trap innervation
|
Spinal Accessory
|
|
|
lower trap action
|
Depression of scapula
When acting with the Serratus anterior, upward rotation of scapula |
|
|
Levator Scapulae origin
|
Transverse processes of C1-4
|
|
|
Levator Scapulae insertion
|
Medial border of scapula between superior angle and root of spine
|
|
|
Levator Scapulae innervation
|
Dorsal Scapular
|
|
|
Levator Scapulae action
|
Adduction, elevation, and downward (medial) rotation of scapula
|
|
|
Rhomboids origin
|
Major: Spinous processes of T 2-5
Minor: Spinous process of C7 and T1 |
|
|
Rhomboids insertion
|
Major- the medial border of scapula between the spine and the inferior angle
Minor- at the root of the spine of the scapula. |
|
|
Rhomboids innervation
|
Dorsal scapular
|
|
|
Rhomboids action
|
Adduction, elevation, and downward (medial) rotation of scapula
|
|
|
Pectoralis minor origin
|
Ribs 3-5 near cartilages
|
|
|
Pectoralis minor insertion
|
Coracoid process of scapula
|
|
|
Pectoralis minor innervation
|
Medial and lateral pectoral
|
|
|
Pectoralis minor action
|
Scapular depression and tilts scapula anteriorly (tipping)
|
|
|
Supraspinatus origin
|
Medial 2/3 of supraspinous fossa of scapula
|
|
|
Supraspinatus insertion
|
Greater tubercle of humerus
|
|
|
Supraspinatus innervation
|
Suprascapular
|
|
|
Supraspinatus action
|
Initial 10 – 15 degrees of GH joint abduction
Stabilizes the head of humerus in glenoid (compression) |
|
|
Infraspinatus origin
|
Medial 2/3 of infraspinous fossa of scapula
|
|
|
Infraspinatus insertion
|
Greater tubercle of humerus
|
|
|
Infraspinatus innervation
|
Suprascapular
|
|
|
Infraspinatus action
|
External rotation of the humerus
stabilizes the head of humerus in the glenoid downward glide of the head of the humerus |
|
|
Teres Minor origin
|
Upper 2/3 and dorsal surface of lateral border of scapula
|
|
|
Teres Minor insertion
|
Greater tubercle of humerus
|
|
|
Teres Minor innervation
|
Axillary
|
|
|
Teres Minor action
|
External rotation of the humerus
stabilizes the head of humerus in the glenoid downward glide of the head of the humerus |
|
|
Subscapularis origin
|
Subscapular fossa of the scapula
|
|
|
Subscapularis insertion
|
Lesser tubercle of humerus
|
|
|
Subscapularis innervation
|
Subscapular
|
|
|
Subscapularis action
|
Internal rotation of the humerus
stabilizes the head of humerus in the glenoid downward glide of the head of the humerus |
|
|
Latissimus dorsi origin
|
Lower 6 thoracic vertebra
thoracolumbar fascia iliac crest |
|
|
Latissimus dorsi insertion
|
Intertubercular groove of humerus
|
|
|
Latissimus dorsi innervation
|
Thoracodorsal
|
|
|
Latissimus dorsi action
|
Adduction, medial rotation, extension of the gleno-humeral joint
|
|
|
Teres Major origin
|
Dorsal inferior angle of scapula
|
|
|
Teres Major insertion
|
Lesser tubercle of humerus
|
|
|
Teres Major innervation
|
Subscapular
|
|
|
Teres Major action
|
Adduction, medial rotation, extension of the gleno-humeral joint
|
|
|
Pectoralis major origin
|
Med. 1/3 of clavicle
sternum upper ribs |
|
|
Pectoralis major insertion
|
Humerus (greater tubercle)
|
|
|
Pectoralis major innervation
|
Lateral and medial pectoral
|
|
|
Pectoralis major action
|
Adduction and medial rotation
Horizontal adduction |
|
|
Anterior deltoid origin
|
Lateral 1/3 of clavicle
|
|
|
Anterior deltoid insertion
|
Deltoid tuberosity of humerus
|
|
|
Anterior deltoid innervation
|
Axillary
|
|
|
Anterior deltoid action
|
Flexion and abduction of GH joint
medial rotation |
|
|
middle deltoid origin
|
Lateral and superior acromion
|
|
|
middle deltoid insertion
|
Deltoid tuberosity of humerus
|
|
|
middle deltoid innervation
|
Axillary
|
|
|
middle deltoid action
|
Abduction
|
|
|
Posterior deltoid origin
|
Spine of scapula
|
|
|
Posterior deltoid insertion
|
Deltoid tuberosity of humerus
|
|
|
Posterior deltoid innervation
|
Axillary
|
|
|
Posterior deltoid action
|
Extension and abduction of GH joint
lateral rotation |
|
|
Coracobrachialis origin
|
Apex of Coracoid process of scapula
|
|
|
Coracobrachialis insertion
|
Antero-medial middle shaft of humerus
|
|
|
Coracobrachialis innervation
|
Musculocutaneus
|
|
|
Coracobrachialis action
|
Flexes and adducts the GH joint
|
|
|
Triceps brachii origin
|
Long head: Infraglenoid tubercle of scapula
Lateral head: lateral and posterior proximal ½ of body of humerus Medial Head: distal 2/3 of medial and posterior surfaces of humerus |
|
|
Triceps brachii insertion
|
Olecranon process of ulna
|
|
|
Triceps brachii innervation
|
Radial
|
|
|
Triceps brachii action
|
Extends elbow
Long head: also extends and adducts GH joint |
|
|
Anconeus origin
|
Lateral epicondyle of humerus
|
|
|
Anconeus insertion
|
Olecranon process of ulna
|
|
|
Anconeus innervation
|
Radial
|
|
|
Anconeus action
|
Extends elbow
|
|
|
Biceps brachii origin
|
Short head: Coracoid process of scapula
Long head: Supraglenoid tubercle of scapula |
|
|
Biceps brachii insertion
|
Radial tuberosity
|
|
|
Biceps brachii innervation
|
Musculocutaneus
|
|
|
Biceps brachii action
|
Elbow flexion
Forearm supination Long head flexes GH joint |
|
|
Brachialis origin
|
Distal, anterior half of humerus
|
|
|
Brachialis insertion
|
Ulnar tuberosity and coronoid process
|
|
|
Brachialis innervation
|
Musculocutaneus
|
|
|
Brachialis action
|
Elbow flexion
|
|
|
Brachioradialis origin
|
Lateral supracondylar ridge of humerus
|
|
|
Brachioradialis insertion
|
Styloid process of radius
|
|
|
Brachioradialis innervation
|
Radial
|
|
|
Brachioradialis action
|
Flex elbow
Supinate and pronate forearm to midposition |
|
|
Pronator Teres origin
|
Medial epicondyle of humerus
coranoid process of ulna |
|
|
Pronator Teres insertion
|
Medial side of the lateral surface of the radius
|
|
|
Pronator Teres innervation
|
Median
|
|
|
Pronator Teres action
|
Pronates forearm
flexes elbow |
|
|
Supinator origin
|
Lateral epicondyle of humerus
|
|
|
Supinator insertion
|
Lateral, proximal shaft of radius
|
|
|
Supinator innervation
|
Radial
|
|
|
Supinator action
|
Supinates forearm
|
|
|
Pronator quadratus origin
|
Anterior distal surface of ulna
|
|
|
Pronator quadratus insertion
|
Anterior distal surface of radius
|
|
|
Pronator quadratus innervation
|
Median
|
|
|
Pronator quadratus action
|
Pronates forearm
|
|
|
Extensor carpi ulnaris origin
|
Common extensor tendon from lateral epicondyle of humerus
|
|
|
Extensor carpi ulnaris insertion
|
Base of 5th metacarpal
|
|
|
Extensor carpi ulnaris innervation
|
Radial
|
|
|
Extensor carpi ulnaris action
|
Extends and adducts (ulnarly deviates) wrist
|
|
|
Extensor carpi radialis L and B origin
|
Lateral supracondylar ridge of humerus
|
|
|
Extensor carpi radialis L and B insertion
|
L: base of 2nd metacarpal
B: base of 3rd metacarpal |
|
|
Extensor carpi radialis L and B innervation
|
Radial
|
|
|
Extensor carpi radialis L and B action
|
Extends wrist, abducts wrist (radially deviates)
flexes elbow |
|
|
Flexor carpi ulnaris origin
|
Common flexor tendon from medial epicondyle
|
|
|
Flexor carpi ulnaris insertion
|
Pisiform bone, hamate, and 5th metacarpal
|
|
|
Flexor carpi ulnaris innervation
|
Ulnar
|
|
|
Flexor carpi ulnaris action
|
Flexes and ulnarly deviates wrist; assists in elbow flexion
|
|
|
Flexor carpi radialis origin
|
Common flexor tendon from medial epicondyle
|
|
|
Flexor carpi radialis insertion
|
Base of 2nd and 3rd metacarpals
|
|
|
Flexor carpi radialis innervation
|
Median
|
|
|
Flexor carpi radialis action
|
Flexes wrist
abducts wrist flexes elbow |
|
|
Palmaris Longus origin
|
Common flexor tendon from medial epicondyle
|
|
|
Palmaris Longus insertion
|
Flexor retinaculum
|
|
|
Palmaris Longus innervation
|
Median
|
|
|
Palmaris Longus action
|
Tenses palmar fascia
|
|
|
Flexor digitorum profundus origin
|
Anterior, middle ulna
|
|
|
Flexor digitorum profundus insertion
|
The four tendons run into the bases of the distal phalanges
|
|
|
Flexor digitorum profundus innervation
|
Index and middle – Median
Ring and little - Ulnar |
|
|
Flexor digitorum profundus action
|
Flexes the following joints in fingers 2 (index) -5 (little): wrist, MP, PIP, and DIP
|
|
|
Flexor digitorum superficialis origin
|
Common flexor tendon from medial epicondyle of humerus
|
|
|
Flexor digitorum superficialis insertion
|
Sides of middle phalanges of the four fingers (not the thumb)
|
|
|
Flexor digitorum superficialis innervation
|
Median N.
|
|
|
Flexor digitorum superficialis action
|
Flexes the wrist and MP, PIP joints in the fingers (not the thumb)
|
|
|
Extensor digitorum origin
|
Lateral epicondyle of humerus
|
|
|
Extensor digitorum insertion
|
Extensor expansions of 4 digits and specifically into the base of the proximal phalynx (more to follow in class).
|
|
|
Extensor digitorum innervation
|
Radial
|
|
|
Extensor digitorum action
|
Extends the wrist and 4 fingers at MP joints
Via attachment into the extensor expansion and in conjunction with the lumbricles and interossei also extend the PIP and DIP joints. |
|
|
Lumbricales origin
|
1st & 2nd : Tendons of flexor digitorum profundus in index and middle fingers.
3rd & 4th: Tendons of the flexor digitorum profundus in ring and little fingers. |
|
|
Lumbricales insertion
|
Radial border of the extensor expansions of 2-5th digits
|
|
|
Lumbricales innervation
|
Index and middle: Median
Ring and little: Ulnar |
|
|
Lumbricales action
|
Flex MP joints, extends PIP and DIP joints of fingers (not thumb)
|
|
|
Palmar interossei origin
|
Ulnar side of 1,2,4 5th metacarpals
|
|
|
Palmar interossei insertion
|
Extensor expansions of 2,4 5 digits and bases of prox. Phalanges
|
|
|
Palmar interossei innervation
|
Ulnar
|
|
|
Palmar interossei action
|
Adducts thumb, index ring, and little fingers toward the axial line – assist with PIP and DIP joint extension
|
|
|
Dorsal interossei origin
|
Adjacent sides of 2 metacarpals
|
|
|
Dorsal interossei insertion
|
Bases of prox. Phalanges; extensor expansions of 2nd-4th digits
|
|
|
Dorsal interossei innervation
|
Ulnar
|
|
|
Dorsal interossei action
|
Abduct 2nd-4th digits– assist with PIP and DIP joint extension
|
|
|
Abductor pollicis longus origin
|
Posterior surface of proximal ulna and radius
|
|
|
Abductor pollicis longus insertion
|
Base of 1st metacarpal – radial side
|
|
|
Abductor pollicis longus innervation
|
Radial
|
|
|
Abductor pollicis longus action
|
Abducts and extends the CMC joint of the thumb
abducts (radially deviates) and flexes the wrist |
|
|
Abductor pollicis brevis origin
|
2 lateral carpal bones (trapezium and scaphoid)
|
|
|
Abductor pollicis brevis insertion
|
Base of the proximal phalanx of thumb
radial side |
|
|
Abductor pollicis brevis innervation
|
Median
|
|
|
Abductor pollicis brevis action
|
Abducts the CMC and MC joint
extends the IP joint of the thumb |
|
|
Extensor pollicis longus origin
|
Posterior surface of middle 1/3 of ulna
|
|
|
Extensor pollicis longus insertion
|
Dorsal aspect of base of distal phalanx of thumb
|
|
|
Extensor pollicis longus innervation
|
Radial
|
|
|
Extensor pollicis longus action
|
Extends the IP and MCP joint of the thumb
assists with abduction and extension of the wrist |
|
|
Extensor pollicis brevis origin
|
Posterior Surface of distal third of radius
|
|
|
Extensor pollicis brevis insertion
|
Dorsal aspect of base of proximal phalynx of thumb
|
|
|
Extensor pollicis brevis innervation
|
Radial
|
|
|
Extensor pollicis brevis action
|
Extends and abducts the CMC and extends the MCP joints of the thumb
Also assists in abduction of the wrist. |
|
|
Flexor pollicis longus origin
|
Anterior surface of radius and adjacent interosseous membrane
|
|
|
Flexor pollicis longus insertion
|
Base of distal phalanx of thumb
|
|
|
Flexor pollicis longus innervation
|
Median
|
|
|
Flexor pollicis longus action
|
Flexes IP joint of the thumb, assists in flexion of the MCP and CMC joints of the thumb, and may assist in flexion of the wrist.
|
|
|
Flexor pollicis brevis origin
|
3 lateral carpal bones (trapezium, trapezoid, capitates)
|
|
|
Flexor pollicis brevis insertion
|
Proximal phalanx of thumb
|
|
|
Flexor pollicis brevis innervation
|
Median and ulnar
|
|
|
Flexor pollicis brevis action
|
Flex metacarpaphalangeal and carpometacarpal joints of the thumb
Assists in opposition. |
|
|
Opponens pollicis origin
|
1 lateral carpal bone (trapezium, and flexor retinaculum)
|
|
|
Opponens pollicis insertion
|
1st metacarpal bone
|
|
|
Opponens pollicis innervation
|
Median (c6-t1)
|
|
|
Opponens pollicis action
|
Opposes (flex, abd and IR) the carpometacarpal joint of thumb (touching the pads of digit 1 and 5)
|
|
|
Adductor pollicis origin
|
Lateral carpal bone (capitate) and mid metacarpal bone (2 & 3)
|
|
|
Adductor pollicis insertion
|
Medial proximal phalanx.
|
|
|
Adductor pollicis innervation
|
Ulnar
|
|
|
Adductor pollicis action
|
Adducts carpometacarpal joint (adducts and assists in flexion of metacarpalphalangeal joint)
|
