Answer:
Muscle is a soft tissue found in both animals and humans. The cells of the muscles comprise protein filaments of actin and myosin that slide past one another, which produces contraction and changes both the length and the shape of the cell.
Muscles function by producing force and motion and are primarily responsible for:
1. Locomotion.
2. Maintaining and changing body posture.
3. Circulation of blood cells throughout the body.
4.Movement of internal organs, such as the contraction of the heart and the movement of food through the digestive system via peristalsis.
There are three types of muscles
•Skeletal or striated muscles
•Cardiac muscles
•Smooth muscles
Based on the muscle action, muscles are further classified into:
•Voluntary muscles
•Involuntary muscles