22 multiple choice 1 point a muscles contraction is ultimately produced by the infinitesimal shortening of…
22 multiple choice 1 point a muscles contraction is ultimately produced by the infinitesimal shortening of its: thick filaments sarcomeres myosin molecules titin molecules
Answer
Brief Explanation:
Muscle contraction occurs due to the shortening of sarcomeres, the basic functional units of muscle. Thick filaments, myosin molecules, and titin molecules are components within the muscle - sarcomeres are the structures that actually shorten to cause contraction.
Answer:
B. Sarcomeres