Category: P

A goiter surrounding a large blood vessel.  

A usually diffuse goiter characterized by multiplication of cells lining the follicles or alveoli. Colloid is usually reduced and the follicular cavities assume various sizes and are often obliterated by the infoldings of their walls. Fibrous tissue may increase markedly. The iodine content of the gland is low.  

Glycosuria caused by dysfunction of the anterior pituitary.  

Glycosuria resulting from the injection of phloridzin, which reduces the renal threshold for glucose.  

The sensory endings of the periodontal ligament that provide acute sensitivity.  

Glaucoma produced by the dispersion of organic pigment from the zonula ciliaris to the trabecular meshwork of the eye.  

An optical device, used by persons who must lie supine for extended periods, to allow them to view objects in their environment without eye or neck strain. Prisms mounted on spectacle frames bend the image to make the feet visible while the person is looking straight ahead.  

Glass treated with a medium that permits the exiting light waves to vibrate in only one direction.  

Glass that is manufactured to appear clear until light strikes it. When used in sunglasses, the lens becomes dark and reduces the amount of light transmitted, becoming clear again when no longer exposed to bright light.  

Gastric glands near the pylorus that secrete gastric juice.