Muscles1. Muscles are studied by Myology.
2. They provide movement and protection.
3. There are over 600 muscles in the human body.
4. They form 35-40% of the body weight
5. The muscles are formed by muscle cells.
6. There are different classifications of muscles.
7. According to the basic parts of the skeleton all the muscles are divided into the muscles of the trunk, head and extremities,
8. According to their form they are divided into long, short and wide muscles. Long muscles
form extremities. Short muscles form the body cavities, the face. Wide muscles lie on the
trunk.
9. According to the structure all the muscles are divided into smooth- which form digestive tract, reproductive organs, arteries, veins and striated which form extremities.
10. Striated muscles are controlled by the brain and called voluntary.
11. Smooth muscles are not controlled by the brain and called involuntary.
12. The cardiac muscle is striated in structure and involuntary in nature.
13. According to the action all the muscles are divided into extensors, flexors, abductors, adductors, rotators, supinators, etc.
14. According to Lesgafts classification all the muscles are divided into static (strong) and dynamic (skilled).
15 Scientists used three basic methods to study muscles: experimental work on animals, the study of the muscles on a living human body and on the cadavers.
