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(vā′ză) Plural of vas.

v. efferentia The secretory ducts of the testis to the head of the epididymis.

v. nervorum The blood vessels supplying nerves.

v. recta 1. Tubules that become straight before entering the mediastinum testis. 2. Capillary branches of the renal efferent arterioles, parallel to the loops of Henle.

v. vasorum Minute blood vessels that are distributed to the walls of the larger veins and arteries.


(vā′zăl) [vas + -al] Pert. to a vas or vessel.


(vā-zal′j(ē-)ă) [vas + -algia] Pain in a vessel of any kind.


(vas′kyŭ-lăr) [L. vasculum, a small vessel] Pert. to or composed of blood vessels.

vascular access

A portal of entry into the circulation, as by a dialysis catheter.

PATIENT CARE: Vascular access in adults can usually be established with a local anesthetic, but, for pediatric patients, general anesthesia is preferred. SEE: table.

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Methods of Accessing the Vasculature

Intraosseously (through the cortex of a bone, esp. a bone in the leg)

Intravenously (peripherally or centrally)

Via surgically implanted ports, e.g., for the frequent or long-term administration of antibiotics, blood products, or cancer chemotherapy.

By venous cutdown

vascular cell adhesion molecule-1

ABBR: VCAM-1. A cell adhesion molecule that helps bind white blood cells such as lymphocytes or monocytes to the endothelium of blood vessels. SYN: vascular cell adhesion protein.

vascular clip

A small titanium or polyglycolic acid vessel clamp used to occlude blood vessels or to perform vascular anastomoses. In the anastomotic application, the clips are used in place of sutures. Advocates believe that this everting technique allows for less endothelial trauma and improved bonding of collagen molecules.

vascular endothelium

The simple squamous epithelial tissue lining the blood vessels. It is a semipermeable barrier between the blood and the vascular smooth muscle, produces vasodilator chemicals, and may inhibit vasoconstrictor substances. Damage to the endothelium leads to increased production of prostaglandins and stimulates blood clotting.


(vas″kyŭ-lar′ĭt-ē) The state of being vascular.


(vas″kyŭ-lă-rĭ-zā′shŏn) [L. vasculum, a small vessel] The development of new blood vessels in a structure.


(vas′kyŭ-lă-rīz″) [L. vasculum, a small vessel] To become vascular by development of new blood vessels.

vascular parkinsonism

Parkinson disease produced by small ...

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