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Q. Which muscles act involuntarily?
(i) Striated muscles
(ii) Smooth muscles
(iii) Cardiac muscles
(iv) Skeletal muscles
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)
Answer:- (b) (ii) and (iii)
(ii) Smooth muscles (iii) Cardiac muscles
The involuntary muscles are Smooth muscles and Cardiac muscles
The muscles that act involuntarily are called visceral muscles. They are located in the abdomen and thorax. These muscles are responsible for breathing, digestion, and other essential functions. Smooth muscles are involuntary and can be found in the walls of organs such as the stomach and intestines. They are also found in the walls of blood vessels. Cardiac muscles are involuntary and can be located in the heart. Smooth muscle cells contract to move materials through an organ, while cardiac muscle cells contract to pump blood throughout the body.
