What is a motor neuron?

Motor Neuron is a type of cell in the nervous system that directly or indirectly controls the contraction or relaxation of muscles, which in most cases leads to movement. Motor neurons are also called Motoneurons or Effective neurons . While efficient neurons carry information from the central nervous system to muscles and other systems, afferent neurons or sensory neurons , bear information from sensory organs and tissues such as eyes and skin back to the central nervous system.

while it is a cell, motor neuron is best served its purpose. Neuron consists of three parts: dendrites; cell body or soma; and axon. Dendrits are branched from the body of the cells and receive electrochemical signals from other units of the nervous system. The cell or soma body contains the necessary cellular components and genetic information needed to maintain a functional cell. Axon or nerve fiber is considered to be the most important part of the neuron; Long, thin fiber performs electricImpulses and sends signals where they are needed.

Generally speaking, a motor neuron may fall into one of the three wide categories. Somatic motoneurons are directly involved in skeletal muscle contraction and usually participate in locomotion. Special visceral motoneurons are connected to the movement of gills in the fish and neck movement and facial muscles in vertebrates. General visceral motoneurons, sometimes simply called visceral motoneurons, are directly involved in the contractions of the heart, arterial muscles and other guts that are not consciously controlled.

The neurons engine differs slightly in the function among vertebrates who have backbone columns and invertebrates who do not have spinal columns. In vertebrates, the motor neuron may only be contractile; Motorneurons cannot directly release the muscles. Muscle relaxation is only caused by inhibiting motor neurons. For invertebrates, motor neurons can directly download directly reLax muscles.

Motor neurons can be influenced by a class of disease known as Motor neuron disease . These diseases tend to prevent muscle control in the body and can affect such acts such as speaking, eating, walking and breathing. Motor neuron disease is usually referred to as amyotrophic lateral sclerosis. The specific causes of most cases of amyotrophic lateral sclerosis are not known, although it is suspected of a strong genetic basis. Despite extensive research, there is no cure for motoring diseases.