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2 Αυγ 2023 · Semimembranosus is a relatively large muscle that originates from a small facet on the rough superolateral surface of the ischial tuberosity. The tendon of semimembranosus appears at the level of the mid-thigh and continues caudally toward the point of insertion at the medial condyle of the tibia.
The semimembranosus acts synergistically with the popliteus muscle through the fibrous extension towards this muscle. The distal semimembranosus complex actively pulls the posterior horn of the medial meniscus, protecting it from being crushed between the medial femoral condyle and the posterior medial tibial plateau during knee flexion.
The semimembranosus muscle acts on both the hip and the knee joint in the same way as the other two muscles of the posterior compartment of the thigh. It's also an antagonist of the quadriceps femoris. Let's start by looking at the action of the semimembranosus at the hip joint. The contraction of the muscle acts to extend the thigh which is ...
7 Νοε 2022 · Interactive 3D model of the semimembranosus muscle and information on its origin, insertion, action, innervation, and blood supply.
22 Μαρ 2024 · Hip Extension: The semimembranosus aids in extending the hip joint, which involves moving the thigh backward. This action is crucial for activities such as walking, running, and climbing stairs. Knee Flexion: The muscle contributes to bending the knee, an essential movement for walking, sitting, and squatting.
Action: Flexes and medially rotates leg at knee joint; extends thigh at hip joint. Innervation: Tibial division of sciatic nerve (L5-S2). Arterial Supply: Perforating arteries of deep femoral artery. Complete Anatomy. The world's most advanced 3D anatomy platform. Try it for Free. See these models in 3D with Complete Anatomy App. Origin.
5 Ιουν 2021 · The semimembranosus muscle is one of the hamstring muscles in the posterior compartment of the thigh and accompanies the semitendinosus muscle in the medial aspect of the posterior thigh. It is named for its flattened membranous tendon of its ischial attachment.
