Question

Of the total nephrons, the juxtamedullary nephrons constitute………..%
A. 15 B. 45
C. 65
D. 85

Answer 1

Hint: Juxtamedullary is the nephrons and their renal corpuscles are near the medulla, PCT proximal convoluted tubules and loop of Henle occur deeper in the medulla, that are other types of nephrons.

Complete answer:
Nephrons are the structural and functional unit of the kidney that functions as the filtration of blood and remove toxic and unwanted substances such as excess water, hormones, drugs, urea, and ions. Nephrons are called a renal corpuscle that consists of a tuft of capillaries known as glomerulus and encompasses bowman capsules. Juxtamedullary nephrons contribute 15% of nephrons in the human kidney, juxtamedullary nephrons have their corpuscle in the cortex.
The nephron filters out urine from the blood through four mechanisms such as filtration, reabsorption, secretion, and excretion these, the function is associated with a different part of the nephrons such as proximal tubule, a loop of Henle, distal convoluted tubule connecting tubule and collecting duct system.
The structure of the nephron is associated with the renal corpuscle name as glomerulus and bowman's capsule, renal tubules that consist of PCT, the loop of Henle, DCT, and CT. As 15 percent contribution as juxtamedullary nephron in total nephron in the kidney, the glomeruli are present in the inner margin of the cortex. It controls the plasma volume when water availability is low in the region.
Hence, the correct option is A.

Note: Kidney is associated with the excretory system of the body which is the main excretory organ of the body, in humans two bean-shaped, reddish colour structure present in the lower abdomen, which is associated with the urethra, ureters, and urinary bladder.