BIOL 1104 Lecture Notes - Calcaneus, Flexor Digitorum Longus Muscle, Extensor Hallucis Longus Muscle

• School: Carleton University
• Department: Biology
• Course: BIOL 1104
• Professor: Tamy Superle

Document Summary

Acl from anterior intercondylar area of the tibia to the posterior lateral side of the lateral condyle of the femur; fxn: prevents anterior displacement of tibia on femur and hyperextension. Pcl from posterior intercondylar area of the tibia to the anterior lateral surface of the medial condyle of the femur; prevents posterior displacement of tibia on femur and => flexion stability. Oblique popliteal expansion of semitendinosus ligament, crosses knee from lateral to medial; relatively weak => extension stability. Arcurate popliteal strengthens knee capsule posteriorly (in extension) by spreading over entire posterior aspect of knee. Genicular branches of poplitial artery (superior medial/lateral, inferior medial/lateral, descending, middle), & recurrent branches of tibial artery (ant/post) Branches of obturator, femoral, tibial, & common peroneal nn. F. muscles/movements: flexion assisted by sartorius, gracilis, popliteus, extention quadriceps femoris assisted by tensor fascia lata, rotators. Laterally: biceps femoris: knee locking femur rotates ~20 degrees medially. Deep: popliteus, flexor digitorum longus, flexor hallucis longus, tibialis posterior.