arteriole

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Related to arteriolar: arteriolar sclerosis

arteriole

[är′tir·ē‚ōl]
(anatomy)
An artery of small diameter that terminates in capillaries.
References in periodicals archive ?
Perclot is intended for use in surgical procedures as an adjunctive hemostatic device when control of capillary, venular, and arteriolar bleeding by pressure, ligature, and other conventional procedures is ineffective or impractical.
The number of patients with diabetic nephropathy and arteriolar hyalinosis was limited (11 and 19, respectively).
Intra-arterial promethazine did not block the forearm arteriolar dilator response of intravenous morphine, but the alpha-adrenergic antagonist phentolamine did.
Another pathologic hallmark is arteriolar vasoconstriction, which leads to glomerular ischemia (76).
Diabetic patients with ED exhibited abnormal blood pressure and platelet-aggregation responses (markers of endothelial function) than diabetic men without ED; this resulted in impaired arteriolar dilatation and ED.
Sympathetic block and heparinization have been employed during the acute management of unintentional intra-arterial injection, because of the results of animal experiments with other known arteriolar irritants.
Grade 1 consisted of 'mild' generalized retinal arteriolar narrowing; Grade 2 consisted of 'more severe' generalized narrowing, focal areas of arteriolar narrowing and arteriovenous nicking; Grade 3 consisted of grades 1 and 2 signs plus the presence of retinal hemorrhages, microaneurysms, hard exudates and cotton-wool spots; Grade 4 also referred to as accelerated (malignant) hypertensive retinopathy, consisted of the signs in the preceding three grades plus optic disk swelling and macular edema.
Much like a dam operator controls water flow into a river, a mechanosensor, likely located inside the smooth muscle cells that form the blood vessel walls, keeps tabs on the pressure of the blood flowing through the afferent arteriolar into the filters.
Their hypotensive effect is believed to initially arise from the reduction of blood volume by sodium depletion, and later on, by direct relaxation of arteriolar smooth muscle[1].
Platelet consumption occurs in pre-eclampsia as arteriolar vasospasm damages the endothelial layer of small vasculature, forming lesions.