pineal gland
A small, cone-shaped endocrine gland, also called the pineal body or epiphysis cerebri. The pineal gland extends posteriorly from the third ventricle of the brain. It consists of portions of neurons, neuroglial cells, and specialized secretory cells called pinealocytes. The pinealocytes synthesize the hormone melatonin and secrete it directly into the cerebrospinal fluid, which takes it into the blood. Melatonin affects reproductive development and daily physiologic cycles.
Calcium deposition in the pineal makes it a useful marker of midline in skull X-rays.
Related category
• ANATOMY AND PHYSIOLOGY
Source: National Cancer Institute
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)
BACK TO TOP
|
