arteriole


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Related to arteriole: arteriosclerosis

arteriole

 [ahr-te´re-ōl]
a minute arterial branch. adj., adj arterio´lar.

ar·te·ri·ole

(ar-tēr'ē-ōl), [TA]
A minute artery with a tunica media comprising only one or two layers of smooth muscle cells; a terminal artery continuous with the capillary network.
Synonym(s): arteriola [TA]

arteriole

/ar·te·ri·ole/ (ahr-tēr´e-ōl) a minute arterial branch.arterio´lar
afferent glomerular arteriole  a branch of an interlobular artery that goes to a renal glomerulus.
efferent glomerular arteriole  one arising from a renal glomerulus, breaking up into capillaries to supply renal tubules.
postglomerular arteriole  efferent glomerular a.
precapillary arteriole  arterial capillary.
preglomerular arteriole  afferent glomerular a.
straight arterioles of kidney  branches of the arcuate arteries of the kidney arising from the efferent glomerular arterioles and passing down to the renal pyramids.

arteriole

(är-tîr′ē-ōl′)
n.
One of the small terminal branches of an artery, especially one that connects with a capillary.

ar·te′ri·o′lar (-ō′lər, -ə-lər) adj.

arteriole

[ärtir′ē·ōl]
Etymology: L, arteriola, little artery
the smallest of the arteries. Blood flowing from the heart is pumped through the arteries, to the arterioles, to the capillaries, into the veins, and returned to the heart. The muscular walls of the arterioles constrict and dilate in response to both local factors and neurochemical stimuli; thus, arterioles play a significant role in peripheral vascular resistance and in regulation of blood pressure. Also called arteriola. See also artery. arteriolar, adj.

arteriole

Anatomy A teeny weeny artery that connects arteries with capillaries

ar·te·ri·ole

(ahr-tēr'ē-ōl) [TA]
A minute artery with a tunica media comprising only one or two layers of smooth muscle cells; a terminal artery continuous with the capillary network.
Synonym(s): arteriola [TA] .

arteriole

A small terminal branch of an artery, intermediate in size between an artery and a CAPILLARY.
Arterioleclick for a larger image
Fig. 48 Arteriole . Arterioles, capillaries and venules.

arteriole

any of the narrow, thin-walled arteries that carry oxygenated blood to the tissues from the heart, forming part of the BLOOD CIRCULATORY SYSTEM. Arterioles progressively get smaller as they approach the target tissue, giving offside branches which become capillaries. Some arterioles connect up directly to VENULES via SHUNT VESSELS, particularly in tissues with a constant blood supply such as the skin.

Arteriole

The smallest type of artery.
Mentioned in: Raynaud's Disease

arteriole

minute, muscular-walled artery that communicates with the capillary network; acts as a resistance vessel; see resistance vessels

ar·te·ri·ole

(ahr-tēr'ē-ōl) [TA]
A minute artery with a tunica media comprising only one or two layers of smooth muscle cells; a terminal artery continuous with the capillary network.

arteriole (ärtir´ēōl),

n a smaller arterial branch off an artery and connecting to a capillary.

arteriole

a minute arterial branch.

afferent arteriole
enters the glomerulus at the vascular pole and divides into capillaries which subsequently merge to form efferent arterioles.
efferent arteriole
derived from the glomerular capillaries in the renal glomeruli, these arterioles exit from the glomerulus at its vascular pole.
straight arteriole
see arteriola rectae renis.
References in periodicals archive ?
Histologic analysis typically displays various degrees of endothelial cell injury, with or without hemorrhage and thrombosis of capillaries, arterioles, and arteries; the features of the vessels are similar to those seen in renal TA-TMA.
Retinal arterioles that become permanently occluded typically have a silver wire appearance.
10 Control Group A showed no hyalinisation in any arteriole (Figure-1).
Angiotensin II causes vasoconstriction, including of the afferent arterioles, increasing glomerular hypertension and damage.
Drugs, such as the immunosuppressants cyclosporine and tacrolimus, chemo-therapeutic drugs bleomycin and cisplatin, clopidogrel, oestrogen-containing oral contraceptives and quinine may cause thrombosis in the afferent renal arteriole and glomerulus.
The obstruction also increases pressure on the system, decreasing GFR and contributing to afferent arteriole constriction via tubuloglomerular feedback, which results in decreased glomerular capillary filtration pressure (Porth, 2007).
They are the conection between arterioles (the smallest artery) and venules (the smallest vein) and, thus, between the arterial land venous sides of the circulatory system.
Using the x40 objective lens of the compound light microscope allows only a single layer of the three-dimensional arteriole to be focused at a time (Fig.
Doctors discovered a 16mm long and 4cm deep Arteriole Venus Malformation (AVM) - a narrowed vein on his brain that requires expensive gamma knife and radio therapy and up to three years recuperating.
The basic functional unit of the liver is the hepatic lobule, which consists of portal triads (hepatic arteriole, portal venule, bile duct, lymphatics and branch of the vagal nerve) at the periphery that surround a central vein (Fig.
The latter is associated not just with hypertensive retinopathy, but is often a feature of retinal arteriole macroaneurysm, and is often associated with retinal vein occlusions.
There appears to be no effect on the efferent arteriole.