Question

define

1 . involuntary contraction
2. Voluntary contraction​

Answer 1

Answer:

Voluntary muscle contraction is used to move the body and can be finely controlled, such as movements of the finger or gross movements that of the biceps and triceps. ... Skeletal muscle, which involves muscles from the skeletal tissue, is arranged in discrete groups.

Explanation:

spasm is a sudden involuntary contraction of a muscle, a group of muscles, or a hollow organ such as the heart. A spasmodic muscle contraction may be caused by many medical conditions, including dystonia. Most commonly, it is a muscle cramp which is accompanied by a sudden burst of pain.

Answer 2

Answer:

Voluntary contraction

described, and it is commonly held that during the voluntary contraction. of a muscle, the nerve-element discharges into the muscle-element a. series of impulses rapidlyfollowing each other, the muscle-element. responding by a contraction to each impulse.

involuntary contraction

A spasm is a sudden involuntary contraction of a muscle, a group of muscles, or a hollow organ such as the heart. A spasmodic muscle contraction may be caused by many medical conditions, including dystonia. Most commonly, it is a muscle cramp which is accompanied by a sudden burst of pain.