Question

Main function of glomerulus is :

• A. filtration of urine
• B. reabsorption of $ {{H}_{2}}O $
• C. reabsorption of $ N{{a}^{+}} $
• D. concentration of urine

Answer 1

The Correct Option is A

Glomerulus is a tuft of capillaries. Blood enters the glomerulus through afferent arteriole and leave it through efferent arteriole. The glomerular capillaries are narrower than the afferent renal arterioles. Therefore the blood pressure in the glomerular capillaries becomes very high so that there is continuous process of ultrafilteration through the semipermeable glomerular capillaries membrane. Hence, water and many dissolved substances from the blood are filtered into the lumen of theBowmans capsule through its walls. This filterate contains a large amount of water and other dissolved substances such as urea, uric acid amino acids, glucose, K, Na, vitamins etc. Water is reabsorbed in the distal convoluted tubule and collecting duct of nephron. Reabsorption of sodium takes place in proximal convoluted tubule and asscending limb of loop of Henle.

Answer 2

Nephrons are found in the kidney's renal cortex. The vast majority of nephrons are cortical nephrons. The juxtamedullary nephrons are located in the renal cortex near the medulla portion of the kidney. The nephron is split into three parts: the renal corpuscle, the renal tubule, and the capillary network. The renal cortex contains the renal corpuscle. It is made up of the Bowman's capsule, which contains a network of capillaries known as the glomerulus.
The glomerulus aids in blood filtration and the formation of glomerular filtrate. The afferent arteriole transports the blood that must be filtered. Water, glucose, salt, and urea are removed from the blood, and a filtrate is created, which is then sent to the bowman's capsule, which aids in the collection of the filtrate. This results in the creation of urine as the filtrate passes through the different barriers.