Muscle, Trachea (M. Trachealis, Pna)

The muscle and trachea are important components of the human respiratory system. The tracheal muscle, also known as the trachealis muscle, is a smooth muscle that surrounds the trachea. It plays an important role in regulating the diameter of the trachea and controlling the flow of air passing through it.

The tracheal muscle has a specific structure that is different from other muscles in the body. It consists of band and ring fibers that form a ring around the trachea. These fibers control the diameter of the trachea, which helps control the flow of air passing through the airways.

Together with the tracheal muscle, the stump (from the Latin pars nervosa accessorii) plays an important role in the regulation of breathing. Pna is one of the components of the nervous system responsible for the innervation of the smooth muscles of the respiratory tract. Pna controls the contraction of the muscles of the trachea and bronchi, which allows you to regulate air flow and maintain normal breathing.

However, although the tracheal muscle and pna play an important role in the respiratory system, they can also cause many diseases such as bronchial asthma, bronchial spasm and other diseases associated with restricting the flow of air into the lungs.

In conclusion, the tracheal muscle and pna are important components of the respiratory system, controlling the diameter of the airways and regulating air flow. They play an important role in maintaining normal breathing and can cause many diseases associated with restricting the flow of air into the lungs.