- periaqueductal gray substance
- periventricular gray substance substantia grisea centralis.
Medical dictionary. 2011.
Medical dictionary. 2011.
Periaqueductal gray — Infobox Brain Name = PAGENAME Latin = s. grisea centralis GraySubject = 188 GrayPage = 806 Caption = Section through superior colliculus showing path of oculomotor nerve. Periaqueductal gray is the gray area just peripheral to the cerebral… … Wikipedia
Substance dependence — Substance dependency Classification and external resources ICD 10 F10.2 F19.2 ICD 9 … Wikipedia
substance — Stuff; material. SYN: substantia [TA], matter. [L. substantia, essence, material, fr. sub sto, to stand under, be present] alpha s. SYN: reticular s. (1). anterior perforated s. [TA] a region at the base … Medical dictionary
Nucleus — 1) In cell biology, the structure that houses the chromosomes. 2) In neuroanatomy, a group of nerve cells. * * * 1. In cytology, typically a rounded or oval mass of protoplasm within the cytoplasm of a plant or animal cell; it is surrounded by a… … Medical dictionary
tract — An elongated area, e.g., path, track, way. SEE ALSO: fascicle. SYN: tractus. [L. tractus, a drawing out] alimentary t. SYN: digestive t.. anterior corticospinal t. uncrossed fibers forming a small bundle in the anterior funiculus of the … Medical dictionary
substantia grisea centralis — [TA] periaqueductal gray substance: diffuse collections of small cells immediately surrounding the ependymal lining of the third ventricle of the brain, around the cerebral aqueduct, and in the floor of the fourth ventricle. Called also central… … Medical dictionary
fibrae spinoperiaqueductales — [TA] spinoperiaqueductal fibers: the subgroup of spinomesencephalic fibers of the anterolateral system that originate in the spinal cord and project to the periaqueductal gray substance … Medical dictionary
locus caeruleus — [TA] locus ceruleus, locus coeruleus a pigmented area in the rostrolateral region of the pontine part of the fourth ventricle floor and extending into the mesencephalon in the lateral portion of the periaqueductal gray substance; cells of this… … Medical dictionary
Fiber — The parts of plants that cannot be digested, namely complex carbohydrates. Also known as bulk or roughage. Complex carbohydrates from plants are rich in starch and fiber. Examples of plants that provide complex carbohydrates (fiber) are fresh… … Medical dictionary
Placebo — For other uses, see Placebo (disambiguation) and Placebo effect (disambiguation). Sugar pill redirects here. For Kids of 88 album, see Sugarpills. The placebo effect can be produced by inert tablets, by sham surgery, and by false information,… … Wikipedia