Muscle tone A. is a condition in which stimuli occur so rapidly that there are n
ID: 86162 • Letter: M
Question
Muscle tone A. is a condition in which stimuli occur so rapidly that there are no intervening relaxations. B. is a time during which the tissue cannot respond again. C. results in complete and incomplete D. is a condition in which the muscle fiber only partially relaxes between contractions. E. is a constant tension produced by muscles for long periods of time. A sarcomere is the A. contractile thread that extends the length of the muscle fiber. B. protein strand composed of actin or myosin. C. structural and functional unit of the skeletal muscle cell. D. cell membrane of a muscle fiber. E. cytoplasm of muscle cells. List the following structures in order from smallest to largest. (1) muscle fiber (2) myofilament (3) myofibril (4) muscle fasciculus A. 4, 2, 3, 1 B. 1, 2, 3, 4 C. 3, 1, 4, 2 D. 2, 3, 1, 4 E. 2, 1, 4, 3Explanation / Answer
13. D. dissolve
The one which gets dissolved is solute while the one in which it dissolves is known as solvent.
14. E. constant environment maintained inside body.
Homeostasis is very important because it aids the cells to perform their functions properly.
15. E. constant tension for prolonged periods
This mainly aids in maintaining one's posture and generally increases during passive stretch in form of resistance.
16. C. functional and structural unit
It is basically the smallest portion that has the ability to contract.
17. D. 2,3,1,4
Myofilaments are present in sarcomeres which compose the myofibril. Thousands of myofibril make muscle fibers. When these muscle fibers bundle up they constitute fascicles.
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