Microcirculation
An arteriole transports oxygenated blood from the arteries to the capillary beds and a venule transports de-oxygenated blood from the capillary beds to the veins.
atrium, ventricle, artery, arteriole, capillary, venule, vein
efferent arteriole]
Vasoconstriction of an arteriole increases resistance and results in decreased flow through that particular arteriole.
By the process of diffusion.
the constriction of the smooth muscles surrounding the arteriole closes the opening and reduces blood flow through the arteriole. With this reduced blood flow more blood is left in the artery
the flow of blood through the nephron is : enters through the afferent arteriole, then flows through the glomerulus and into the efferent arteriole. Blood then enters the peritubular capillaries and the vasa recta and then flows through the cortex and medulla of the kidneys close to the tubules Answer: so the flow is afferent arteriole, efferent arteriole, peritubular capillaries, vasa recta
arteriole vasodilation
efferent arteriole
Efferent arteriole
The cluster of capillaries that forms a glomerulus arises from an afferent arteriole. After passing through the glomerular capillaries, blood (minus any filtered fluid) enters an efferent arteriole whose diameter is smaller than that of the afferent vessel. This is instead of entering a venule, the usual circulatory route. The efferent arteriole resists blood flow to some extent, which backs up blood into the glomerulus, increasing pressure in the glomerular capillary.
Yes. If you constrict the afferent arteriole then renal blood flow will decrease.