Question

Write about the structure and function of smooth muscle fibres.

Answer 1

Structure:

Smooth muscle fibres are long with pointed ends (spindle-shaped) and uninucleate (having a single nucleus placed centrally.
They occur as bundles.

Function

Smooth muscles are involuntary muscles and control involuntary movements.

The movement of food in the alimentary
canal or the contraction and relaxation of blood vessels are involuntary movements, and many other involuntary movements are controlled by smooth muscles.