Assertion`:-` Voluntary muscles is controlled by will power.
Reason `:-` It is syncytial and myofibril arranged in special pattern .

Voluntary muscle movements are controlled by centres present in

Voluntary muscles control the movement of iris of eye.

What are voluntary or controlled muscles ?

Assertion : Smooth muscle fibres do not appear to be striated. Reason : There is a regular alternate arrangement of thick and thin filaments in smooth muscle fibre.

Assertion : Biological control of pests is advantageous. Reason : It does not cause pollution .

Assertion : Non-striated muscles are said to be voluntary in nature. Reason : Non-striated muscles can be moved according to will.

Assertion : Non-striated muscles are said to be voluntary in nature. Reason : Non-striated muscles can be moved according to will.

Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : The threshold stimulus is the minimum stimulus required for the beginning of contraction.

Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : The threshold stimulus is the minimum stimulus required for the beginning of contraction.

Assertion: Abdominal muscles is related with respiration in animals. Reason: Relaxation of abdominal muscles draws in air.