Intrinsic Muscle

Muscles play an important role in the functioning of the body, allowing us to move and control various organs and systems. One type of muscle is the intrinsic muscle, which is located inside organs or parts of organs and controls their function. One of these muscles is the intrinsic muscle, which plays an important role in the functioning of some organs.

The intrinsic muscle is a smooth muscle, which means that it is not under the control of our consciousness and works automatically. It is located in the walls of hollow organs such as the stomach, intestines, blood vessels, bladder, bronchi and others. These organs need smooth muscle to control their size and shape and regulate the passage of fluids and other substances through them.

Smooth muscles consist of elongated spindle-shaped cells, which are arranged in groups and surrounded by layers of connective tissue. Each cell contains one nucleus and longitudinally oriented microfilaments. Inside the cell there are actin, myosin and intermediate filaments that provide muscle contraction. Also in the cytoplasm of the cell there are attachment bodies that connect to the plasmalemma and ensure the transmission of force from the muscle to the tissues of the organ.

The activity of the internal muscle is controlled by the autonomic nervous system, which controls the automatic functions of the body. This system regulates muscle contractions depending on the needs of the organ at a certain point in time.

Unlike smooth muscles, striated muscles are located outside the organs and are connected to the bones through tendons. They control our movements and obey our will. Striated muscles consist of long multinucleated fibers that contain many transversely oriented myofilaments that provide muscle contraction.

In conclusion, the intrinsic muscle is an important element of organ function and acts automatically under the control of the autonomic nervous system. Its structure and function are different from the striated muscles that control our movements and obey our will. Understanding the differences between these types of muscles helps us better understand how our body and its systems work.

Intrinsic muscle is a muscle that is located inside a specific organ or part of it and performs the function of controlling this part.

Muscles located inside the tongue, for example, lead to changes in its shape. Smooth muscles found in the walls of organs such as the stomach, intestines, blood vessels, bladder, bronchi and others are examples of intrinsic muscles. These muscles consist of elongated spindle-shaped cells arranged in groups, surrounded by layers of connective tissue. Inside the cell there are longitudinally oriented microfilaments, as well as attachment bodies, which are located both inside and outside the cytoplasm.

The activity of smooth muscles is regulated by the autonomic nervous system. Muscle contractions are not voluntary; they occur slowly and over a long period of time.

Unlike smooth muscles, voluntary muscles (such as those in the arm) are controlled by the mind and can be used to perform specific movements.

Thus, the intrinsic muscle plays an important role in controlling various organs and their functions.