Afferent arterioles

Afferent arterioles

Infobox Artery
Name = PAGENAME
Latin = arteriola glomerularis afferens
GraySubject = 253
GrayPage = 1221


Caption = Scheme of renal tubule and its vascular supply. (Label "Afferent vessel" is visible in upper left.)


Caption2 = Distribution of bloodvessels in cortex of kidney.
BranchFrom = interlobular artery
BranchTo = glomerular capillaries
Vein =
Supplies =
MeshName =
MeshNumber =
DorlandsPre = a_62
DorlandsSuf = 12156661
The afferent arterioles are a group of blood vessels that supply the nephrons in many excretory systems. They play an important role in the regulation of blood pressure.

The afferent arterioles branch from the renal artery which supplies blood to the kidneys.

The afferent arterioles later diverge into the capillaries of the glomerulus.

When renal blood flow is reduced (indicating hypotension), the macula densa releases prostaglandins, which cause the juxtaglomerular cells lining the afferent arterioles to release renin, activating the renin-angiotensin-aldosterone system, to increase blood pressure.

ee also

Efferent arteriole

External links

* - "Renal Vasculature: Efferent Arterioles & Peritubular Capillaries"
* - "Mammal, renal vasculature (EM, Low)"


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