Pineal gland
The pineal gland (also called the
pineal body or epiphysis) is a small endocrine gland in the brain. It is
located near the center of the brain, between the two hemispheres, tucked in a
groove where the two rounded thalamic bodies join.it consists of two types of
cells 1.parenchymal cells 2.neuroglial cells.
The pineal gland is a reddish-gray
body about the size of a pea (8 mm in humans) located just rostro-dorsal to the
superior colliculus and behind and beneath the stria
medullaris, between the
laterally positioned thalamic bodies. It is part of the epithalamus.
The pineal gland is a midline
structure, and is often seen in plain skull X-rays, as it is often calcified.
The
main hormone produced and secreted by the pineal gland is melatonin.
Secretion is highest at night and between the ages of 0-5.melatonin acts
mainly on gonads.
Sumber : Bpk. Dr. Iskandar Zulkarnain
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ahmad baihaqi
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