types of muscle contraction

 Types of contraction

1. Isometric contraction

Muscle fibers don't change in length.

When develop muscle tension but remains the same length.

Muscle don't shorten during contraction, it simply exerts tension.

For example; standind, Holding a door

2. Isotonic contraction

Tension remains the same, in muscle as the muscle length changes.

a. Concentric contraction

Muscle fibers shorten as muscle contract.

b. Eccentric contraction

Muscle fiber lengthen as they contract.

3. Involuntary muscle movements

Spasms

Cramps

Tremors

Tetanus