Cortical radial arteries, formerly known as interlobular arteries,
are
renal blood vessels given off at right angles from the side of the
arcuate arteries looking toward the
cortical substance. The interlobular arteries pass directly outward between the
medullary rays to reach the fibrous tunic, where they end in the capillary network of this part.
These vessels do not
anastomose with each other, but form
end-arteries.
In their outward course, they give off lateral branches, which are the
afferent arterioles that supply the
renal corpuscles. The afferent arterioles, enter
Bowman's capsule and end in the
glomerulus.
From each glomerulus, the corresponding
efferent arteriole arises and then exits the capsule near the point where the afferent arteriole enters.
Distally, efferent arterioles branch out to form dense
plexuses (i.e.,
capillary beds) around their adjacent
renal tubules. For
cortical nephrons, a single network of capillaries, known as the
peritubular capillaries, surrounds the entire renal tubule, whereas for
juxtamedullary nephrons, the peritubular capillaries surround only the
proximal and
distal convoluted tubules, while another network branching from the efferent arteriole, known as the
straight arterioles of kidney, surrounds the
nephron loop (of
Henle).
Name
* Lote refers to them as "''cortical radial arteries (formerly called inter-lobular arteries)''"
* Mescher et al refer to them as "''interlobular arteries (or cortical radial arteries)''"
References
*
External links
* - "Urinary System: kidney, H&E, interlobular artery and vein"
{{Authority control
Kidney anatomy