Arcuate nucleus: A collection of neurons (nerve cells) in the hypothalamus of the brain. Some arcuate neurons contain dopamine and act to inhibit the release of the hormone prolactin by the pituitary gland. Other arcuate neurons contain a substance called neuropeptide Y (NPY) and influence hunger. When activated, these neurons can produce remarkable increases in eating that result in obesity. These neurons may be regulated by glucose, insulin, and the hormone leptin. By monitoring the blood levels of these substances, arcuate neurons are kept informed of whether or not the body has sufficient calories and nutrients so that it can adjust feeding accordingly.
n. Any of various specialized groups of nerve cells in the medulla oblongata, thalamus, or hypothalamus of the brain.
The arcuate nucleus contains two important populations of neuroendocrine neurons with nerve endings in the median eminence. One population releases dopamine into the ...
Arcuate nucleus: A collection of neurons (nerve cells) in the hypothalamus of the brain. Some arcuate neurons contain dopamine and act to inhibit the release of the hormone ...
The arcuate nucleus is an aggregation of neurons in the mediobasal hypothalamus, adjacent to the thi
BioInfoBank Library :: Arcuate Nucleus :: physiology :: Thyroid transcription factor-1 regulates feeding behavior via melanocortin pathway in the hypothalamus.