Semimembranosus
Semimembranosus
How-To: The semimembranosus can only be seen from a medial angle by removing or cutting the gracilis and flipping it over so that what is under it can be seen. The semimembranosus will generally be darker and less white than the semitendinosus, which is right next to it. On the medial view of the thigh, it will be the most right of the muscles, and will be a rectangular shaped muscle that is the biggest of the medial thigh muscles.
How-To: The semimembranosus can only be seen from a medial angle by removing or cutting the gracilis and flipping it over so that what is under it can be seen. The semimembranosus will generally be darker and less white than the semitendinosus, which is right next to it. On the medial view of the thigh, it will be the most right of the muscles, and will be a rectangular shaped muscle that is the biggest of the medial thigh muscles.
- Action: The semimembranosus works to flex the knee joint and move the lower leg.
- Origin: Originates from the pelvis.
- Insertion: Inserts in the distal end of the femur and the proximal end of the tibia.
Semitendinosus
How-To:The semitendinosus is a muscle that lies deep to the biceps femoris. It will look smooth, white, and tendon-y from the back, hence its name "semitendinosus." After finding the semimembranosus, go to the back of it, and look for a seperation- dig in the back of the muscle to seperate it from the semitendiosus.
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