Nerve fibers Vasomotor

Vasomotor nerve fibers (synonym - vasomotor nerve fibers) are thin nerve fibers that innervate the smooth muscles of blood vessels. They regulate vascular tone and lumen, thereby controlling blood flow and blood pressure.

Vasomotor nerve fibers originate in the vasomotor center of the medulla oblongata. From there they go to the sympathetic nodes located along the spine, and then along the sympathetic nerves they reach the blood vessels.

Stimulation of vasomotor fibers causes contraction of smooth muscle cells of the vascular wall, which leads to a narrowing of the lumen of blood vessels and an increase in blood pressure. Their inhibition, on the contrary, relaxes blood vessels and reduces pressure. Thus, vasomotor nerve fibers play an important role in regulating systemic circulation and maintaining body homeostasis.

Nerve vessels play an important role in regulating blood flow in various organs and systems of the body. They are special epithelial cells that are equipped with contractile proteins and form a variety of fibers that provide vascular tone and blood flow control depending on the body's need for blood supply. Regulation processes can be both conscious and unconscious.

Nerve vascular fibers are specialized structures responsible for controlling blood supply to various organs and tissues. Depending on the need, the vessels can increase or decrease their blood flow in order to provide organs and tissues with sufficient oxygen and nutrients. The nerve vascular fiber is made up of interwoven tubes called endothelial cells, between which are membranes and special contractile proteins called myocytes. When nerve vascular fibers are stimulated, they produce positive ions from their axons, which cause myocytes to contract, causing the blood vessels to constrict. This process is regulated by the sympathetic and parasympathetic nervous systems