PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A B C
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C B A
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C A B
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A C B
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Detailed explanation-1: -Voluntary means done out of free will or by choice. Voluntary muscles are also often called skeletal muscles (because all of the muscles attached to the skeleton are voluntary muscles) or striated muscles (because the muscle fibers make them look striated, or stripy).
Detailed explanation-2: -One very important involuntary muscle is your heart, which keeps beating all day and night. Other involuntary muscles help digest food and are found in your stomach and intestines.
Detailed explanation-3: -What can you infer from the fact that your body is basically covered in voluntary muscle? A large network of nerves also run throughout your body. Unless you exercise everyday, your muscles will stop working.
Detailed explanation-4: -Striation: A set of parallel surface contours (scratches or scrapes) on an object caused by a combination of force and motion.