Why are the renal artery and vein critical to the process of
osmoregulation in mammals?
a.) The renal artery and vein are the main pathways regulating
how much is produced by the kidneys
b.) The kidneys require a constant and abnormally high oxygen
supply to function
c.) The kidneys require higher-than-normal levels of
d.) The renal artery delivers blood with nitrogenous waste to
the kidney, and the renal vein brings blood with less nitrogenous
wastes away from the kidneys
The renal artery and renal vein are critical in osmoregulation
in mammals because
CORRECT ANSWER IS D) THE RENAL ARTERY DELIVERS BLOOD WITH
NITROGENOUS WASTE TO THE KIDNEY , AND THE RENAL VEIN BRINGS BLOOD
WITH LESS NITROGENOUS WASTES AWAY FROM THE KIDNEYS
The kidneys are an important organ for the elimination of
nitrogenous waste and production of urine. Along with this they
help in Osmoregulation.
The left and right renal arteries supply oxygenated blood to the
kidneys which are a branch from the abdominal aorta.
The left and right renal vein carries deoxygenated blood that
leaves the kidneys to enter the inferior vena cava.
Inside each kidney, the renal arteries branch into smaller and
smaller parts until they break into capillaries to filter in the
Each nephron has a small sac of capillaries called as the
glomerulus. These capillaries have a high pressure which allow
filtration of blood through the glomerulus of the bowman’s capsule.
This process is called as ultrafiltration.
Now, the filtered blood along with water, urea, nitrogenous
waste and salts through the renal tubule for reabsorption. Maximum
water and salts are reabsorbed and the nitrogenous wastes such as
urea, uric acid, creatinine along with some amount of water is
eliminated out in the form of urine.
Once the kidneys have performed the cleansing function, the
filtered deoxygenated blood leaves the kidney through the renal
vein moving up to the inferior vena cava and returning to the
EFFERENT BLOOD VESSEL DISTAL CONVULATED TUBULE (OCT) GLOMERULUS PROXIMAL CONDUGATED TUBULE CUBODIAL (PCT) (SIMPLE CELLS TO DeOOK COLLECTING Ducs AFFERENT BLOOD VESSEL c- cup shaped (130wman’s CAPSULE GLOMERULAR CAPSULE CONSISTS OF GLOMERULUS AND BOWMANS CAPSULE Loop’ OF HENLE