- parietal organ
- parapineal o.
Medical dictionary. 2011.
parietal organ
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Parietal eye — A parietal eye, also known as a parietal organ or third eye is a part of the epithalamus present in some animal species. The eye may be photoreceptive and is usually associated with the pineal gland, regulating circadian rhythmicity and hormone… … Wikipedia
parietal — 1. adjective a) Of or pertaining to the wall of a body part, organ or cavity. Hydrochloric acid is secreted by the parietal cells of the gastric glands, located on the wall of the fundus of the stomach b) Of or pertaining to the parietal bones 2 … Wiktionary
parietal — pa•ri•e•tal [[t]pəˈraɪ ɪ tl[/t]] adj. 1) anat. zool. pertaining to the wall of an organ or cavity 2) anat. pertaining to or situated near the parietal bones of the skull 3) bot proceeding or arising from a wall, as ovules from an ovary in certain … From formal English to slang
parietal — I. adjective Etymology: Middle English, from Medieval Latin parietalis, from pariet , paries wall of a cavity or hollow organ, from Latin, wall Date: 15th century 1. a. of or relating to the walls of a part or cavity b. of, relating to, or… … New Collegiate Dictionary
parapineal organ — a median dorsal outgrowth of the pineal body in certain lower vertebrates such as tailless amphibians, primitive fishes, and lizards; its principal cell type is an apparent photoreceptor. In some species it may specialize to form an extracranial… … Medical dictionary
Pineal gland — Diagram of pituitary and pineal glands in the human brain Latin glandula pinealis Gray s … Wikipedia
crocodile — crocodiloid /krok euh dil oyd, krok euh duy loyd/, adj. /krok euh duyl /, n. 1. any of several crocodilians of the genus Crocodylus, found in sluggish waters and swamps of the tropics. 2. any reptile of the order Crocodylia; crocodilian. 3. the… … Universalium
nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… … Universalium
digestive system, human — Introduction the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract (alimentary canal), or the series of structures and organs through which food and liquids pass… … Universalium
animal development — Introduction the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by … Universalium
