What is the medical word/term described:specializes in transmitting impulses.(from nervous system)

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dano7744 eNotes educator| Certified Educator

The nervous system in humans relays information. Some of this information tells the body what to do, this is a motor message from the brain to skeletal, cardiac, or smooth muscle or a gland. Sensory information is also passed along. This is when your senses like smell or touch send messages from the periphery to the brain.

Both motor and sensory data are propagated by the action of chemical messengers called neurotransmitters. These neurotransmitters are chemicals that cross synapses, they facilitate the movement of the message to other locations of the nervous system.

In order for the body to send and recieve these chemical messages, many things must be in order. Electrolyte levels must be fairly close to normal, if they are not, then sufficient amounts of important e-lytes like sodium, potassium, chloride, magnesium, calcium, phosphorus, and many more, may not be present to conduct or help innervate a muscle.

ako6777 eNotes educator| Certified Educator

The answer might be neurotransmitters. Neurotransmitters are chimicals in the brain that allow for the transmission of signals from one neuron to another.  They are also found at axon endings of motor neurons to stimulate muscle fibers.

"The three major categories of substances that act as neurotransmitters are (1)  amino acids  (primarily glutamic acid, GABA, aspartic acid & glycine), (2) peptides (vasopressin, somatostatin, neurotensin, etc.) and (3) monoamines  (norepinephrine, dopamine & serotonin) plus acetylcholine."

There are many neurotransmitters in the central nervous system while their are only two used in the perepheral nervous system. The perepheral nervous system utilizes acetylcholine and norepinephrine.