Anatomy and Cell Biology 2221 Lecture Notes - Lecture 14: Rectus Femoris Muscle, Vastus Medialis, Vastus Lateralis Muscle

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Anatomy 9501 lecture 2: anterior and medial thigh. Here we have a few major hip flexors and a few other minor hip flexors: Iliacus: psoas +/, rectus femoris (minor hip flexor, sartorius (minor hip flexor) These start as 2 muscles but converge to form 1. Attachments: asis to sup. and med. surface of the tibia. Action: flexion, abduction, and lat. rotation of the thigh (hip joint) and flexes knee. ** this is the longest muscle of the body and crosses 2 joints, hip and knee! This is a muscle that crosses 2 joints and has 2 heads! ** also helps to stabilize the hip joint. These are primarily extensors of the knee. Their tendons unite distally in the thigh to form the patellar tendon. Vastus lateralis: rectus femoris, vastus lateralis, vastus medialis, vastus intermedius this sits deep to rectus femoris. Attachments: asis along lat. leg to lateral condyle of the tibia. Action: abduction, flexion (weak), and ir at the hip.

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