There are about _________ muscles in human beings.
Correct answer: C. 650
- A. 206
- B. 300
- C. 650
- D. 703
Explanation
The human body has about 600 to 650 skeletal muscles, so 650 is the accepted approximate figure. Students may choose 206 by confusing the number of bones in the adult skeleton with the number of muscles.
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About Muscles
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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