PHTY100 Lecture Notes - Lecture 8: Extensor Digitorum Longus Muscle, Extensor Hallucis Longus Muscle, Flexor Digitorum Longus Muscle
Document Summary
7. 1 identify, list attachments and deduce the action(s) of the muscles of the leg: Tibialis anterior: this is a long fusiform muscle, origin is the front of the leg lateral to the anterior border of the tibia. It is covered by strong fascia and gains its upper attachments from the deep surfaces of this fascia: the muscle becomes tendinous in the lower third, the tendon continues through both the superior and inferior extensor. It passes downwards and medially over the distal end of the tibia retinacula. In running the big toe is the last to leave the ground achieved. It also assists in extension at the interphalangeal joints. It is an extensor of the lateral four toes at the metatarsophalangeal joints: actions, functional activity, during walking and running, extensor digitorum longus pulls the toes upwards after they have been flexed. It keeps them clear of the ground until the heel and foot make contact with the ground again.
