Question

Compare the different types of skeletal muscles with respect to nature, intercalated discs, action, and location.

Answer 1

Skeletal muscles:

Striated muscles:

1. These muscles are also called voluntary muscles because they can be controlled by one's will.
2. They have alternate light or dark bands known as striations.
3. The cells are long and cylindrical in shape and are arranged in bundles.

Unstriated muscles:

1. These muscles are also called involuntary muscles because they cannot be controlled by one's will.
2. They do not have alternate light or dark bands or striations.
3. The cells are elongated and spindle-shaped and are arranged in the form of sheets.

Cardiac muscles:

1. These muscles are involuntary and cannot be controlled by one's will.
2. They have striations and are found in the walls of the heart.
3. The cells are cylindrical shaped and are arranged in a network.

Characteristics	Striated muscles	Unstriated muscles	Cardiac muscles
Nature	1.Striated and not branched	1.Non-striated and not branched	1. Striated
Intercalated discs	2. Absent	2. Absent	2. Present
Action	3. Voluntary	3. Involuntary	3. Involuntary
Location	4. Found in the feet, tongue, pharynx, etc	4. Found in the lungs, iris, digestive tract, etc	4. Found in the walls of the heart