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  • Which muscles act involuntarily? (i) Striated muscles (ii) Smooth muscles (iii) Cardiac muscles (iv) Skeletal muslces (a) (i) and (ii) (b) (ii) and (iii) (c) (iii) and (iv) (d) (i) and (iv)

Which muscles act involuntarily?
(i) Striated muscles
(ii) Smooth muscles
(iii) Cardiac muscles
(iv) Skeletal muslces
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)

Answers (1)

Skeletal muscles are attached to the bones which function in movements like walking, running, etc. These are voluntary movements and are under the direct control of an individual. Skeletal muscles are also striated muscles.

On the other hand, smooth muscles are located in the organs of the body like the urinary bladder, uterus, respiratory tract, etc. They are involuntary in nature. Cardiac muscles are present in the heart and help in the rhythmic contraction and relaxation of the heart which is an involuntary action.
The correct option is (b) (ii) and (iii)

 

 

 

 

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