MUSCLE PHYSIOLOGY

Detailed explanation-1: -Smooth muscles are involuntary muscles. Their movements cannot be controlled consciously. Smooth muscles are uninucleate and spindle-shaped, but not voluntary.

Detailed explanation-2: -Smooth muscle cannot be controlled consciously and thus acts involuntarily. The non-striated (smooth) muscle cell is spindle-shaped and has one central nucleus.

Detailed explanation-3: -Answer and Explanation: Typically, all smooth muscle is considered involuntary. So there is actually no smooth muscle that is voluntary. Voluntary muscle tissue would be muscles that are controlled consciously such as skeletal muscle which is used for movement.

Detailed explanation-4: -Types of Smooth muscle Smooth muscles are of two types. They are: Single-unit (visceral) smooth muscle: All the cells function collectively and simultaneously as a single unit (unitary). Multiunit smooth muscle: It is a type of muscle in which all the cells cannot function collectively and work independently.