afferent arteriole

Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to afferent arteriole: aldosterone, Distal convoluted tubule

Afferent Arteriole

(1) Afferent glomerular arteriole, arteriola glomerularis afferens.
(2) Any arteriole that connects the terminal branch of an artery with a capillary.

afferent arteriole

Anatomy A blood vessel in the kidney that supplies blood to glomeruli


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 ?
The ARM, particularly the myogenic component, attempts to compensate by dilating the afferent arteriole, but this becomes dysfunctional when the MAP falls below about 70-80 mmHg.
Although the RBF falls in response to AII, the fall in GFR is not of equal magnitude because AII maintains pressure within the glomerular capillary by causing greater vasoconstriction of the efferent than of the afferent arteriole.
dilating the afferent arteriole to increase renal blood flow.
constricting the afferent arteriole to increase intraglomerular pressure.
The myogenic mechanism is based on the function of baroreceptors (stretch receptors) in the afferent arterioles.
In the kidneys, afferent arterioles involved by a lupus microangiopathy contained pyknotic nuclear material that stained prominently with the TUNEL technique.
The alveolar walls do not show the homogeneous eosinophilic alteration seen in the afferent arterioles.
The patient, however, was not myelosuppressed during this period, and in the kidney, many neutrophils were present in glomeruli but not in the microangiopathy of the afferent arterioles.