Discuss the functions and properties of muscles?
Answers
Answer:
Muscular system
The muscular system consists of a group of structural units called the muscles, (the muscular system is the total of body muscles), The muscles consist of a group of muscular tissues and usually known as flesh.
The number of body muscles in man is about 620 muscles or more, The muscles enable the different parts of the body to move, so, the man can move from a place to another and perform his mechanical movement.
Properties of muscles
The muscles are characterized generally by being filamentous.
Have the ability of contraction and relaxation to perform the different functions and activities.
Functions
Positional movement: includes the change in the position of a certain organ in relation to the other parts of the body.
Transportation: includes the movement of the body from one place to another.
Maintain the body posture: either in sitting or standing position and this because of the muscles of the neck, trunk & lower limbs.
Continuous movement of blood: inside the blood vessels and maintains the normal blood pressure inside blood vessels, as a result of the contraction of smooth muscles (involuntary) that present in the wall of these blood vessels.
Structure of skeletal muscle
The skeletal muscle consists of a large number of thin filaments called muscular cells or muscle fibers, The muscle fibers are always found in groups that known as muscle bundles that are surrounded by a bundle membrane.
Explanation: