Which muscle is NOT a hamstring?

Study for the Muscle Actions and Functions – Anatomy and Movement Test. Equip yourself with multiple choice questions, each with detailed explanations and hints. Prepare confidently for your exam!

Multiple Choice

Which muscle is NOT a hamstring?

Explanation:
This question tests recognizing which muscles belong to the hamstring group versus the quadriceps. The hamstrings are the three muscles on the back of the thigh that mainly flex the knee and extend the hip: biceps femoris, semitendinosus, and semimembranosus. The rectus femoris sits on the front of the thigh as part of the quadriceps. It crosses the hip and knee joints but its primary actions are hip flexion and knee extension, not knee flexion with the hamstrings. So, although rectus femoris crosses both joints, it is not a hamstring muscle, making it the correct choice.

This question tests recognizing which muscles belong to the hamstring group versus the quadriceps. The hamstrings are the three muscles on the back of the thigh that mainly flex the knee and extend the hip: biceps femoris, semitendinosus, and semimembranosus. The rectus femoris sits on the front of the thigh as part of the quadriceps. It crosses the hip and knee joints but its primary actions are hip flexion and knee extension, not knee flexion with the hamstrings. So, although rectus femoris crosses both joints, it is not a hamstring muscle, making it the correct choice.

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