Category: P

Expression of concentration of a solute in a solution. The concentration of a solute in a liquid or gas. For example, a pollutant such as soot may be said to be present in air at a level of 50 parts per million (parts of air). The units also may be expressed as weight of one…

Cells in the anterior pituitary with no discernable function.  

Cells in the anterior pituitary that secrete melanotropic hormone, as well as ACTH. These cells are intermixed with those of pars distalis.  

Cells in the anterior pituitary that produce thyroid-stimulating hormone, luteotropic hormone, adrenocorticotrophic hormone (ACTH), prolactin, lipotropin, β-endophin, and follicle-stimulating hormone.  

Stomach cells that secrete hydrochloric acid. Distinctive cellular entities that form a lining along the interior of the stomach are accountable for the synthesis of intrinsic factor and hydrochloric acid.  

Structure on the surface of bone and kidney cells that binds parathyroid hormone and signals these cells to respond to this hormone.  

Neurotoxins that are among the most potent of the known low-molecular weight toxins. Paralytic shellfish poisoning is attributed to the consumption of shellfish that have become contaminated with a toxin or group of toxins on the ingestion of toxic plankton, in particular, toxic dinoflagellates. The shellfish involved are pelecypods, a family of mollusks, including mussels…

A hormone (also called cholecystokinin) secreted by endocrine cells lining the duodenum. Its release is stimulated by the presence of lipid in the chyme. It signals the exocrine pancreas to release pancreatic enzymes (pancreatic juice) and stimulates the release of bile from the gall bladder.  

A species of pathogenic bacteria which can cause severe ulceration of the cornea (also called P. pyocyanea). Produces green-blue pigment (pyocyanine) on culture and in wound pus—hence the alternative name. Yellow pigment (fluorescein) may also be apparent. Gelatin-liquefying, ferments only glucose. Occurs as a pathogen in urine, burns, wounds etc., often with other bacteria. Growing…

A corneal contact lens containing base-down prism, which gives added weight to the lower part of the lens and thus tends to keep the lens from rotating.