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The pineal gland (also known as the pineal body [1] or epiphysis cerebri) is a small endocrine gland in the brain of most vertebrates. In the darkness the pineal gland produces melatonin, a serotonin -derived hormone, which modulates sleep patterns following the diurnal cycles. [2] The shape of the gland resembles a pine cone, which gives it ...
The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testicles, thyroid gland, parathyroid gland, hypothalamus and adrenal glands. The hypothalamus and pituitary glands are neuroendocrine organs. [1] Endocrine glands in the human head and neck and their hormones.
Pinealocyte. Pinealocytes are the main cells contained in the pineal gland, located behind the third ventricle and between the two hemispheres of the brain. The primary function of the pinealocytes is the secretion of the hormone melatonin, important in the regulation of circadian rhythms. [1] In humans, the suprachiasmatic nucleus of the ...
The history of the pineal gland is an account of the scientific development on the understanding of the pineal gland from the ancient Greeks that led to the discovery of its neuroendocrine properties in the 20th century CE. As an elusive and unique part of the brain, the pineal gland has the longest history among the body organs as a structure ...
Ajna ( Sanskrit: आज्ञा, IAST: Ājñā , IPA: [ˈaːd͡ʑɲaː] ), brow [1] or third eye chakra, is the sixth primary chakra in the body according to Hindu tradition and signifies the unconscious mind, the direct link to Brahman (ultimate reality). [2] The third eye is said to connect people to their intuition, give them the ability to ...
Endocrine system. The endocrine system [1] is a messenger system in an organism comprising feedback loops of hormones that are released by internal glands directly into the circulatory system and that target and regulate distant organs. In vertebrates, the hypothalamus is the neural control center for all endocrine systems.
The pineal gland starts to develop during the second month of gestation. In the average adult, the dimensions are as follow: 5-9mm in length, 1-5mm in width and 3-5mm in thickness. Its average weight is 100–180 mg. [40] The pineal gland consists of a central core made up of small lobes and a cortex that possesses a diffuse distribution of ...
Third eye. The third eye (also called the mind's eye or inner eye) is an invisible eye, usually depicted as located on the forehead, supposed to provide perception beyond ordinary sight. [1] In Hinduism, the third eye refers to the ajna (or brow) chakra. In both Hinduism and Buddhism, the third eye is said to be located around the middle of the ...