pineal

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Related to pineal extract: pineal gland

pineal

 [pin´e-al]
1. shaped like a pine cone.
2. pertaining to the pineal body.
pineal body a small, conical structure attached by a stalk to the posterior wall of the third ventricle of the cerebrum, believed by many to be an endocrine gland. In certain amphibians and reptiles the gland is thought to function as a light receptor. In most mammals, including humans, it appears to be the major or unique site of melatonin biosynthesis; the effect of melatonin on the body and the exact function of the pineal body remain obscure. Called also epiphysis cerebri and pineal gland.

pin·e·al

(pin'ē-ăl),
1. Shaped like a pine cone. Synonym(s): piniform
2. Pertaining to the pineal body.
[L. pineus, relating to the pine, pinus]

pineal

/pin·e·al/ (pin´e-il)
1. pertaining to the pineal body.
2. shaped like a pine cone.

pineal

(pĭn′ē-əl, pī′nē-)
adj.
1. Having the form of a pine cone.
2. Of or relating to the pineal gland.

pineal

[pin′ē·əl]
Etymology: L, pineus, pine cone
1 pertaining to the pineal body.
2 resembling a pine cone.

pineal

adjective Referring to the pineal gland or region of the brain.

Pronunciation
Medspeak-UK: pronounced, PIE knee ull
Medspeak-US: pronounced, PIN ee tull

pin·e·al

(pin'ē-ăl)
1. Shaped like a pinecone.
Synonym(s): piniform.
2. Pertaining to the pineal body.
[L. pineus, relating to the pine, pinus]

pineal

1. shaped like a pine cone.
2. pertaining to the pineal body.

pineal body, pineal gland
a small, conical endocrine gland attached by a stalk to the dorsal wall of the third ventricle of the cerebrum. In certain amphibians and reptiles the gland functions as a light receptor. In most mammals, including humans, it appears to be the major or unique site of melatonin biosynthesis. The effect of melatonin on the body and the exact function of the pineal body remain uncertain. There is an increasing body of evidence that the pineal body is inhibitory to the gonads and that it is the principal mechanism in the known effect of environmental illumination on estrous cycles. It is proposed that the retina perceives the changes in light intensity and stimulates the pineal gland via the sympathetic nervous system.
pineal extract
pineal eye
in lower vertebrates the pineal body is a third or pineal eye.
pineal gland
see pineal body (above).