| OBF | organ blood flow |
|---|---|
| OC | obstetrical conjugate; occlusocervical; office call; on call; only child; optic chiasma; oral contra... |
| OPO | Organ Procurement Organization |
| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |
| OSF | organ system failure; osteoclast-stimulating factor; outer spiral fiber; overgrowth stimulating fact... |
| vascular plexus | A vascular network formed by frequent anastomoses between the blood vessels (arteries or veins) of a part. Synonym: plexus vasculosus. (05 Mar 2000) |
|---|---|
| vascular polyp | A bulging or protruding angioma of the nasal mucous membrane. Synonym: bleeding polyp. (05 Mar 2000) |
| vascular resistance | An expression of the resistance offered by the systemic arterioles, and to a lesser extent by the capillaries, to the flow of blood. (12 Dec 1998) |
| vascular ring | Anomalous arteries (aortic arches) congenitally encircling the trachea and oesophagus, at times producing pressure symptoms. (05 Mar 2000) |
| vascular sclerosis | <cardiology, disease> Imprecise term for various disorders of arteries, particularly hardening due to fibrosis or calcium deposition, often used as a synonym for atherosclerosis. (17 Oct 1997) |
| vascular sheaths | Fibrous envelopes ensheathing the arteries with their accompanying veins and sometimes nerves as well. Synonym: sheaths of vessels, vaginae vasorum. (05 Mar 2000) |
| vascular spider | spider angioma |
| vascular-streak dieback | A fungal disease of the cacaotree caused by Oncobasidium theobromae. (09 Oct 1997) |
| vascular stripe | The stratified epithelium lining the upper part of the ligamentum spirale cochleae; it is penetrated by capillaries and is believed to be the site of production of endolymph. Synonym: stria vascularis ductus cochlearis, psalterial cord, vascular stripe. (05 Mar 2000) |
| vascular surgeon | A physician specialist expert in the surgical management of occlusive diseases of the blood vessels. (27 Sep 1997) |
| vascular surgery | A branch of medicine dealing with the use of surgery to diagnose/treat diseases of the blood vessels. (09 Oct 1997) |
| vascular surgical procedures | Operative procedures for the treatment of vascular disorders. (12 Dec 1998) |
| vascular system | The cardiovascular and lymphatic system's collectively. Synonym: circulatory system. (05 Mar 2000) |
| vascular tunic of eye | The vascular, pigmentary, or middle coat of the eye, comprising the choroid, ciliary body, and iris. Synonym: tunica vasculosa bulbi, Haller's tunica vasculosa, tunica vasculosa oculi, uvea, uveal tract. (05 Mar 2000) |
| vascular zone | An area in the external acoustic meatus where a number of minute blood vessels enter from the mastoid bone. Synonym: spongy spot, zona vasculosa. (05 Mar 2000) |