A) sarcomere
B) twitch
C) Z-band
D) none of these
Correct Answer: A
Solution :
The skeletal muscles bring about voluntary movements under conscious control of brain and hence called voluntary muscles. The segment of a fibril between two adjacent Z bands is called a Sarcomere. With the help of electron microscope H.E. Huxley recognised that sarcomere is the ultimate unit of contraction.
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