Muscle # on little torso # on leg Origin Insertion Action model model Triceps surae: 126 24a, b medial and lateral condyles of posterior surface of calcaneus plantar flexion femur (2 heads) Gastrocnemius Triceps surae: 127 24c heads of fibula and tibia posterior surface of calcaneus plantar flexion Soleus Tibialis anterior 121 19 Lateral condyle and upper 2/3 of Medial cuneiform and 1st metatarsal Dorsiflexion, tibia Inverts foot Tibialis posterior 129 28 Tibia, fibula, interosseus membrane Navicular, cuneiforms, cuboid, 2nd, plantar flexion 3rd 4th metatarsals Fibularis longus 124 22 Head and upper surface of fibula 1st metatarsal plantar flexion, everts foot (=Peroneus longus) Fibularis brevis 125 23 Lower lateral surface of fibula 5th metatarsal plantar flexion (=Peroneus brevis) Flexor digitorum 130 27 lower posterior surface of tibia distal phalanges of digits 2-5 flexes distal phalanges of 2-5 longus Flexor hallucis 131 29 Lower posterior fibula Distal phalanx of first toe Flexion of first toe longus Extensor digitorum 122 21 Upper anterior fibula Middle and distal phalanges of Extension of toes, dorsiflexion longus digits 2-5 Extensor hallucis 123 20 Fibula, interosseus membrane Distal phalanx of 1st toe Extends 1st toe, dorsiflexion longus (under 21)
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
TAHS%20LCCC%20BIO%20163.docx