Pineal-body


noun
1.
(formerly) the pineal gland.

pineal body n.
A small, unpaired, flattened glandular structure lying in the depression between the two superior colliculi of the brain and secreting the hormone melatonin. Also called conarium, epiphysis, pineal gland.

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  • Pineal-apparatus

    noun 1. a median outgrowth of the roof of the diencephalon in vertebrates that in some develops into the pineal eye and in others into the pineal gland. 2. .

  • Pinealectomy

    pinealectomy pin·e·al·ec·to·my (pĭn’ē-ə-lěk’tə-mē, pī’nē-) n. Surgical removal of the pineal body.

  • Pineal-eye

    noun 1. an eyelike structure that develops from the pineal apparatus in certain cold-blooded vertebrates. noun 1. an outgrowth of the pineal gland that forms an eyelike structure on the top of the head in certain cold-blooded vertebrates pineal eye (pĭn’ē-əl, pī’nē-əl) A sensory structure capable of light reception, appearing as a spot on the […]

  • Pineal-gland

    noun 1. a small, cone-shaped endocrine organ in the posterior forebrain, secreting melatonin and involved in biorhythms and gonadal development. noun 1. a pea-sized organ in the brain, situated beneath the posterior part of the corpus callosum, that secretes melatonin into the bloodstream Technical names epiphysis, epiphysis cerebri pineal gland n. See pineal body. pineal […]

  • Pinealocyte

    pinealocyte pin·e·a·lo·cyte (pĭn’ē-ə-lō-sīt’, pī’nē-, pĭ-nē’-, pī-nē’-) n. A cell of the pineal body having long processes ending in bulbous expansions.


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