Question

What is the difference between voluntary, involuntary and cardiac muscle?

Answer 1

Voluntary muscles are those which work according to our will.

Involuntary muscles are those which donot work according to our will.

cardiac muscles are those which work in in heart

Explanation:

voluntary muscles:-

1. striated
2. contract quickly and tire quickly too.
3. help in the movement of joints in skeleton

Involuntary muscles:-

1. Unstriated
2. contracts slowly and never tire.
3. Help in movement of internal organs like diaphragm, food pipe.

cardiac muscles:-

1. striated
2. contracts and relax powerfully and never tire.
3. help in the movement of heart parts like auricle and ventricle.

Answer 2

Explanation:

striated muscles or skeletal muscles or voluntary muscles -

these muscles are called skeletal muscles because they are mostly attached to bones and helps in body movement .

cells are cylindrical unbranched and multinucleate .

smooth muscles or involuntary muscles -

they are found in the Iris of the eye in ureters and in the branches of the lungs. cells are long spindle shaped and possess a single nucleus .

Cardiac muscles or involuntary muscles -

they help in rhythmic contraction and relaxation of the heart .

cells are cylindrical branched and uninucleate .