Muscle # on little torso model # on arm Model Origin Insertion Action Flexor carpi radialis 75 13 Medial epicondyle of humerus 2nd & 3rd metacarpals Flexes wrist, assists in pronating, abducting hand Flexor carpi ulnaris 77 15 Medial epicondyle of humerus, olecranon process of ulna Pisiform, hamate, 5th metacarpal Flexes wrist, assist in adducting hand Palmaris longus 76 14 Medial epicondyle of humerus Palmar aponeurosis Flexes wrist UPPER LIMB (Hand Movements- Flexion of Digits) Muscle # on little torso model # on big torso model # on arm model Origin Insertion Action Flexor digitorum superficialis 85 (under 74- 76) 20 24 Humerus, ulna, radius Middle phalanges of digits 2-5 Flexes middle and proximal phalanges of digits 2-5 Flexor pollicis longus 22 41 Radius, ulna, interosseus membrane Distal phalanx 1 Flexes thumb UPPER LIMB (Hand Movements- Extends Wrist and Hand) Muscle # on little torso model # on arm model Origin Insertion Action Extensor carpi radialis longus 81 19 Humerus 2nd metacarpal Extends wrist, abducts hand Extensor carpi radialis brevis 80 18 Humerus 3rd metacarpal Extends wrist, abducts hand Extensor carpi ulnaris 78 16 Lateral epicondyle of humerus 5th metacarpal Extends wrist Extensor digitorum 79 17 Lateral epicondyle of humerus Proximal and middle phalanges of digits 2-5 Extension of digits 2-5
Muscle # on little torso model # on leg model Origin Insertion Action Hamstring: Biceps femoris 120 18 long head: ischial tuberosity short head: linea aspera of femur head of fibula, lateral condyle of tibia Collective action (Hamstrings): flex lower leg, extends thigh Hamstring: Semitendinosus 118 16 ischial tuberosity tibia Collective action (Hamstrings): flex lower leg, extends thigh Hamstring: Semimembranosus 119 17 ischial tuberosity medial condyle of tibia Collective action (Hamstrings): flex lower leg, extends thigh Quadriceps Femoris: Rectus femoris 110 11a anterior inferior iliac spine, superior rim of acetabulum patella, tibial tuberosity collective action (quadriceps): extension of lower leg. Independently flexes femur Quadriceps Femoris: Vastus lateralis 112 11c linea aspera lateral condyle of tibia, iliotibial tract collective action (quadriceps): extension of lower leg Quadriceps Femoris: Vastus medialis 113 11b linea aspera patella collective action (quadriceps): extension of lower leg Quadriceps Femoris: Vastus intermedius 111 11d anterior and lateral surface of femur patella collective action (quadriceps): extension of lower leg Sartorius 109 10 anterior superior iliac spine medial surface of tibia flex and medially rotate thigh Gracilis 116 15 pubic bone medial surface of tibia adducts, flexes, rotates thigh medially
Muscle # on little torso model # on leg model Origin Insertion Action Triceps surae: Gastrocnemius 126 24a, b medial and lateral condyles of femur (2 heads) posterior surface of calcaneus plantar flexion Triceps surae: Soleus 127 24c heads of fibula and tibia posterior surface of calcaneus plantar flexion Tibialis anterior 121 19 Lateral condyle and upper 2/3 of tibia Medial cuneiform and 1st metatarsal Dorsiflexion, Inverts foot Tibialis posterior 129 28 Tibia, fibula, interosseus membrane Navicular, cuneiforms, cuboid, 2nd, 3rd 4th metatarsals plantar flexion Fibularis longus (=Peroneus longus) 124 22 Head and upper surface of fibula 1st metatarsal plantar flexion, everts foot Fibularis brevis (=Peroneus brevis) 125 23 Lower lateral surface of fibula 5th metatarsal plantar flexion Flexor digitorum longus 130 27 lower posterior surface of tibia distal phalanges of digits 2-5 flexes distal phalanges of 2-5 Flexor hallucis longus 131 29 Lower posterior fibula Distal phalanx of first toe Flexion of first toe Extensor digitorum longus 122 21 Upper anterior fibula Middle and distal phalanges of digits 2-5 Extension of toes, dorsiflexion Extensor hallucis longus 123 20 (under 21) Fibula, interosseus membrane Distal phalanx of 1st toe Extends 1st toe, dorsiflexion