Selasa, 26 Maret 2013

Pineal Gland

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 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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