Question

Which of the following muscle types cannot be used voluntarily?

(a) Both striated and smooth

(b) Both cardiac and striated

(c) Both smooth and cardiac

(d) Cardiac, striated and smooth

Answer 1

Answer is : (c) Both smooth and cardiac

Both smooth muscle (unstriated muscle) and cardiac muscle are functionally involuntary. Muscles that are under our conscious control are called voluntary muscles, while muscles that are not under our conscious control are called involuntary muscles. Striated muscles are voluntary muscles.