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The Hamstring muscles flex the knee. There are 3 of them
Semimembranosus: is the most superficial (closest to the surface), found on the medial (inner) side of the back of the thigh.
Semitendonosus: is found underneath semimembranosus
Biceps Femoris: is found on the lateral (outer) side of the back of the thigh. Attaches to the fibula and outside of the tibia
What else can I help you with?
What is the Joint of the gastrocnemius?
It plantar flexes the foot at the ankle and flexes the leg at the knee.
What is the only joint that flexes posteriorly?
The knee
What muscle flexes the knee and stabilizes the patella?
quadricep
What flexes the thigh and extends the knee?
rectus femoris
Muscle group that extends the thigh and flexes the knee?
hamstrings
What extends the knee and flexes the thigh?
The Femoral nerve. (The motor branches innervate anterior thigh muscles - quadriceps, which flex the thigh and extend the knee.)
What part of the body does the gastrocnemius move?
The gastrocnemius, the large muscle in the calf, flexes the knee and foot.
What extends the knee and flexes the tight?
The hamstrings (specifically the long head of the biceps femoris, semitendonosis, and semimembranosis)
Which quadricep muscle has an additional action and what is it?
It is the rectus femoris, which along with the action of knee extension, it also flexes the hip
What muscles plantar flex the ankle but do not flex the knee?
The Gastrocnemius and the Soleus flexes the knee and the foot. The Plantaris is an unimportant muscle. Many people do not have it and doctors tend to use this muscle for tendon graphs.
Abducts thigh and rotates it laterally?
The sartorius flexes, abducts and laterally rotates the hip, and flexes and laterally rotates the knee The posterior fibers of the gluteus medius, laterally rotates the hip, while the whole glut medius works to abduct the hip
Does flexing the knee increase the use of the biceps femoris?
Yes, flexing the knee increases the activation of the biceps femoris, which is one of the muscles that make up the hamstrings. As the knee flexes, the biceps femoris contracts to help bend the knee and stabilize the joint. This muscle plays a crucial role in movements involving knee flexion, such as running or cycling.
