Human Anatomy - M.M. Kurepina, A.P. Ozhigova, A.A. Nikitina 2010

Internal Organs
Endocrine System (Glands of Internal Secretion)
Paraganglia

Paraganglia, appearing as small clusters of chromaffin tissue, are found along the aorta and the Sympathetic trunk of The Nervous system. Chromaffin tissue is so named because its Cells are capable of producing adrenaline and noradrenaline and stain with chromium salts. The cells form clusters of various shapes with a well-developed Blood supply. Some paraganglia present in early childhood subsequently disappear, while others persist throughout life. Paraganglia originate in the embryo from cells migrating from the neural crest. Thus, they share a similar origin with the cells of The adrenal medulla and the sympathetic nervous system.



Last update: 08/08/2026

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