What is the structure of the muscle system?

Although there is no consensus on the exact number, most experts agree that the human body has more than 650 muscles. The structure of the muscle system is complex, but in general the muscles are divided into three categories: skeletal, smooth and heart. Some muscles are voluntary, while others are involuntary. In addition, some muscles are striped, while others do not. These are the prominent muscles that people build with exercise. They are attached to bones via tendons and are responsible for voluntary movement. In other words, one must consciously think about moving skeletal muscles to make action.

skeletal muscles are striped, which means they look as if the lines were going through them. Indeed, these visible lines testify to the type of fiber and tissue that form the muscles. Most skeletal muscles work in pairs, with one muscle responsible for movement in one direction and the other in charge of movement in the opposite direction. Similarly, many of them cooperate to achieve one movement of fluids. E.gFor example, to lift a glass of ice tea, several groups of muscles must be able to complete such a simple task.

Another group of muscles found in the structure of the muscle system is smooth muscles. As the name suggests, these muscles are not striped, but instead they have a smooth appearance. They are considered involuntary because one does not have to think about their move to do their job. This group of muscles ensures important body functions such as digestion, breathing, swallowing and blood flow. They can be found in places such as the stomach, the walls of the blood vessels and the respiratory system, and Aznov automatically dominated by a specific area of ​​the brain.

The muscle system structure also includes heart muscles. This group of muscles is found in the walls of the heart and is responsible for maintaining the heart's drawing. Like smooth muscles, they are involuntary so one does not have to consciously think about every rhythm ishim the heart. They also have a striped look, but unlike skeletal muscles, they are designed to make short and quick contractions rather than wide movements.

Due to the extensive structure of the muscle system, about half of the total weight of a person comes from a muscle. Most people are aware of the need to exercise to improve the strength and appearance of voluntary skeletal muscles. Yet, even if smooth and heart muscles are involuntary, they also need to be taken care of. Nutritional diet and sufficient cardiovascular exercise can improve the tone and function of the muscle system and thus improves human health.