The human carotid body is a small structure located at the upper end of the common carotid artery. It consists of nerve fibers, connective tissue, and clusters of parenchyma which contain two kinds of cells—chief and sustentacular (Schwann) cells. In addition to these two kinds of cells, there are enlarged nerve terminals in the parenchyma’ so that the structural unit of this organ is composed of three elements: (1) chief cells, (2) sustentacular cells, and (3) nerve terminals.
KeywordsNerve Terminal Secretory Granule Chromaffin Cell Carotid Body Chief Cell
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