HLSC 2F95 Lecture Notes - Lecture 10: Flexor Digitorum Brevis Muscle, Flexor Digitorum Longus Muscle, Extensor Digitorum Longus Muscle

• School: Brock University
• Department: Health Sciences
• Course: HLSC 2F95
• Professor: dr.macpherson

Document Summary

Tibialis anterior: main ankle dorsi flexor, ankle inverter, inserts: base of first metatarsal bone and medial cuneiform, origin: lateral condyle on tibia. Plantaris: flexes knee, planter flexes the foot, origin: lateral supracondyle ridge, inserts: calcaneus. Fibularis (peroneus: eversion and planter flexion (lateral, longus/brevis different insertions (longus=medial side under foot, brevis=lateral side) Medial head of gastrocnemius (inserts on calcaneus) Tibialis posterior (plantar flexor, inserts on the medial side, allows for inversion) Extensor digitorum longus (i: superior phalanges toes 2-5) Extensor halluces longus (i: superior distal phalanx of toe) Lumbricals (o: tendons of flexor digitorum longus, i: extensor digitorum longus - flexion metatarsophalangeal joints, extension of interphalangeal joints) Abductor halluces (o: calcaneus, i: medial proximal phalanx of big toe) Flexor halluces brevis (o: cuboid and cuneiform, i: proximal phalanx) Flexor digitorum brevis (o: calcaneus, i: sides of middle phalanges 2-5) Adductor hallucis (transverse head) o: base of metatarsal ii-iv.