Which of the following muscles belongs to the hamstrings group?
Vastus medialis
Sartorius
Rectus femoris
Biceps femoris
Vastus lateralis
The Correct Answer is D
Choice A reason: Vastus medialis is part of the quadriceps group located in the anterior thigh. It functions in knee extension and does not belong to the hamstrings.
Choice B reason: Sartorius is a long, thin muscle that runs diagonally across the anterior thigh. It assists in hip and knee flexion but is not part of the hamstrings.
Choice C reason: Rectus femoris is another quadriceps muscle located in the front of the thigh. It helps extend the knee and flex the hip, but it is not a hamstring muscle.
Choice D reason: Biceps femoris is the correct answer. It is one of the three muscles that make up the hamstrings group, located in the posterior thigh. It functions in knee flexion and hip extension.
Choice E reason: Vastus lateralis is also part of the quadriceps group and contributes to knee extension. It is not a hamstring muscle.
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Related Questions
Correct Answer is A
Explanation
Choice A reason: The talus is a tarsal bone in the ankle that articulates with the tibia and fibula. It is not embedded within a tendon and therefore not classified as a sesamoid bone.
Choice B reason: The radius is one of the two long bones in the forearm. It is not a sesamoid bone, as it is not formed within a tendon.
Choice C reason: The femur is the longest and strongest bone in the body, located in the thigh. It is a long bone, not a sesamoid bone.
Choice D reason: The hamate is a carpal bone in the wrist. It is not embedded in a tendon and thus not a sesamoid bone.
Choice E reason: The patella, or kneecap, is the most well-known example of a sesamoid bone. It is embedded within the quadriceps tendon and functions to protect the knee joint and improve leverage during leg extension.
Correct Answer is A
Explanation
Choice A reason: Communication is not a direct function of the skeletal system. While the skeletal system supports structures involved in communication (e.g., the skull housing the brain), it does not itself facilitate communication.
Choice B reason: Support is a primary function of the skeletal system. It provides a rigid framework that supports the body and maintains its shape.
Choice C reason: The skeletal system stores essential minerals such as calcium and phosphate, which can be released into the bloodstream as needed.
Choice D reason: Hematopoiesis, or the production of blood cells, occurs in the red bone marrow found within certain bones. This is a vital function of the skeletal system.
Choice E reason: Bones serve as anchoring points for muscles, allowing movement through the leverage of joints and tendons.
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