BIO 12D Lecture Notes - Lecture 20: Extensor Hallucis Longus Muscle, Flexor Digitorum Longus Muscle, Peroneus Longus
15 May 2020
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Extensor hallucis longus: sends a tendon to the dorsum of the great toe (hallux, dorsiflexes the foot and extends the great toe. Fibularis (peroneus) tertius: extends from the extensor digitorum longus muscle, dorsiflexes and weakly everts the foot. The lateral compartment leg muscles: contains two synergistic muscles that evert and plantar flex the foot, very powerful evertors of the foot, plantar flexion is a secondary function for them. The deep layer of the posterior compartment contains four muscles. The flexor digitorum longus: attaches to the distal phalanges of toes 2 5, plantar flexes the foot, flexes the mp, pip, and dip joints of toes 2 5. Tibialis posterior: plantar flexes and inverts the foot. The superficial muscles and most of the deep muscles plantar flex the foot at the ankle. The superficial layer of the posterior compartment contains three muscles: gastrocnemius, soleus, plantaris.
