Motor Nerve

Motor nerve

The motor nerve is a centrifugal nerve that is responsible for the formation and transmission of nerve impulses from the spinal cord to the muscles and other organs. It is also called an efferent nerve because it carries impulses from the brain to other parts of the body.

The motor nerve has two components: the motor nerve and the afferent nerve. The first is the axons of nerve cells that are located in the spinal cord and transmit signals to the cells of skeletal muscles and organs of movement. Afferent nerves, on the contrary, are sensory nerves responsible for transmitting information from external receptors to the spinal cord.

The main functions of the motor nerve are: - Coordination of body movements; - Control over muscular work; - Regulation of blood circulation intensity; - Formation of the pituitary gland.

Some of the movements we perform are controlled by a nerve center in the brain stem, but more

The motor nerve (synonyms: n.motor nerve, nc, efferent) is the largest of the cranial nerves, providing innervation to most of the muscles of our body. Its motor portion reaches 35-40% of all nerve fibers in our body, which indicates its importance in the innervation of skeletal muscles. The motor nerve has the second largest caliber after the trigeminal nerve, which can reach up to 2 centimeters. This nerve is formed from motor neurons (cells responsible for contracting other muscles) of the nuclei of the midbrain and medulla oblongata. In addition, it is the largest in terms of the number of passages that form in the white matter of the brain. It has 15 separate branches, the diameter of which is in the range of 0.3-0.6 mm. Each of them carries out a separate motor impulse to a separate inducer muscle located on the periphery of the body. Interneurons occur between the nerves, ensuring their functional interaction. Due to this, several processes are carried out in the implementation of basic functions: * Maintaining the balance of muscle tone of the body and eliminating tremor in the absence of any muscle activity; * Maintaining balance; * Ensuring coordination of movements and maintaining the functionality of the visual analyzer and speech; * Suppression of involuntary actions in connection with the activity of the central nervous system or a painful stimulus.