Give one reason for the following statements :
Q. Give one reason for the following statements :
(a) The blood is called connective tissue.
(b) Muscles are able to contract and relax to bring about movements.
(c) Muscles of heart are called involuntary muscles.
Ans.
(a) Blood flows to transport gases, digested food, hormones and waste materials to different parts of the body.
(b) Muscles contain special proteins called contractile proteins, which contract and relax to cause movements.
(c) Muscles of heart show rhythmic contraction and relaxation throughout life without getting fatigued.
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