The muscle that moves a body part towards the midline of the body is:
Correct answer: C. Adductor muscles
- A. Flexor muscles
- B. Extensor muscles
- C. Adductor muscles
- D. Abductor muscles
Explanation
The adductors, as a group, are responsible for bringing the legs inwards towards each other (adduction) when the leg is extended and stabilizing the pelvis in more controlled activities such as walking. A movement of a body part away from the midline, either of the body as a whole or that of the hand or foot, is termed 'abduction', and the muscles that are responsible for that movement are called 'abductor muscles'.
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Muscles covers skeletal, smooth and cardiac muscle, their microscopic structure and the roles of tendons, myofibrils, actin and myosin. It explains the sliding filament mechanism, sarcomere shortening, neuromuscular transmission and calcium regulation, while distinguishing voluntary skeletal movement from involuntary contraction in smooth and cardiac muscle.
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