Question

Write name of muscles responsible for movement of hairs?

Answer 1

Hint: The muscle system consists of muscle tissue. Human body has 639 separate muscles. This tissue consists of long, narrow, highly specialized cells called muscle fibres.
There are three types of muscle in vertebrates – striated muscle, smooth muscle and cardiac muscle.

Complete step by step answer:
-Smooth muscle is not associated with bones.
-It occurs in the internal organs and is responsible for their movements.
-It is therefore, also referred visceral muscle
-A smooth muscle fibre is spindle shape , a uninucleate cell without striations.
-A smooth muscle contracts slowly but can remain contracted for a long time without getting fatigued.
-It is innervated mainly by the autonomic nervous system.
-Its contraction is not the animal’s control.
-It is therefore also called involuntary muscle.
-The function of smooth muscle hair movement, squeezing oil from oil glands, excretion , vision, ejaculation, parturition, movements of secretions.
-So the muscle responsible for movement of hairs is smooth muscle or involuntary muscles

Additional information:
Striated muscle :
-It causes limb movements and locomotion in the vertebrates.
-It is attached to and functions in association with the skeletons. Hence, it is known as skeletal muscle.
-They are voluntary muscles.
Cardiac muscle:
-It occurs in the heart wall and brings about heart beat.
-It too is not associated with bones as smooth muscles.
-A cardiac muscle cell is cylindrical, uninucleate, striated and branched.
-The end of the cells has intercalated discs for cell to cell relay of signals during heart beat.

Note:
 Smooth muscles are present in the dermis of skin between hair follicles and basement membrane of epidermis causing hair movement.