INSIGHT UPSC QUIZ

Science & Technology General Science
Q.

Consider the following statements about ‘Human Body’:

1. Muscles contain special proteins which contract and relax to cause movement. 

2. We can control the movement of all the muscles in our body.

Which of the statement(s) given above is/are correct?

Explanation:

ANSWER: (A) 

  • Statement 1 is correct.

Muscular tissue consists of elongated cells, also called muscle fibres. This tissue is responsible for movement in our body. Muscles contain special proteins called contractile proteins, which contract and relax to cause movement.

  • Statement 2 is not correct.

We can move only some muscles by conscious will. Muscles present in our limbs move when we want them to, and stop when we so decide. Such muscles are called voluntary muscles.

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