hair follicle

the protective casing of the root of a hair. Inside the follicle, the end of the hair shaft is surrounded by a flower-spray ending, one of the basic types of somatosensory receptors. As part of defense behavior, a follicular nerve ending stimulates muscle fibers that contract and cause piloerection.

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Psychology term of the day

May 8th 2024

morula

n. an early stage of embryological development, extending from the first cleavage of the zygote until the blastula is formed by further divisions of daughter cells.