Give one reason for the following statements :
(a) Muscles are able to contract and relax to bring about movements.

(b) Muscles of heart are called involuntary muscles.

Open in App

Solution

Muscles are special fibres in the body that contract and relax to cause movements. Movement is caused by the contraction and relaxation of muscles. When one muscle contracts, the other relaxes and this causes displacement.
The muscles of our heart are called involuntary muscles as they don't work according to our will.

Suggest Corrections

Similar questions

Which one of the following statement is incorrect?

(a) Heart muscles are striated and involuntary

(b) The muscles of hands and legs are striated and voluntary

(d) Muscles located in the reproductive tracts are unstriated and involuntary

Contraction and relaxation of our muscles bring about

Muscles which contract and relax on our will are called

Join BYJU'S Learning Program