The Incomplete Development of an Organ Due to a Deficiency

question 24

Short Answer

The incomplete development of an organ due to a deficiency in the number of cells is known as ____________________.

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Definitions:

Neurotransmitters

Chemical substances released at the end of a nerve fiber by the arrival of a nerve impulse and, by diffusing across the synapse or junction, cause the transfer of the impulse to another nerve fiber, a muscle fiber, or some other structure.

Acetylcholine

One of the major neurotransmitters of the autonomic nervous system.

Norepinephrine

A neurotransmitter and hormone involved in the body's fight or flight response, affecting mood, focus, and alertness.

Neuroendocrine System

Those endocrine glands that are controlled by and interact with the nervous system.