Question

Which of the following is correctly matched with its function of a specific part of a human nephron?

• A. Afferent arteriole – Carries the blood away from the glomerulus towards the renal vein.
• B. Podocytes – Create minute spaces (slit pores) for the filtration of blood into the Bowman’s capsule.
• C. Distal convoluted tubule – Reabsorption of $K^{+}$ ions into the surrounding blood capillaries.
• D. Henle’s loop – Reabsorption of the major substances from the glomerular filtrate.

Answer 1

The correct option is B Podocytes – Create minute spaces (slit pores) for the filtration of blood into the Bowman’s capsule.

Podocytes are simple squamous epithelium which create the slit pores in the Bowman’s capsule as a part of the filtration membrane.
Afferent arterioles enter the glomerulus forming a tuft of capillaries which subsequently merge to form efferent arterioles.
Henle's loop has minimum reabsorption. It plays a significant role in the maintenance of osmolarity of the medullary interstitial fluid. i.e concentration of urine.
In Distal convoluted tubules, facultative reabsorption of water and sodium takes place which is facilitated by the hormones vasopressin and aldosterone. It is also capable of reabsorption of ${\mathrm{HCO}}^{3-}$ and selective secretion of hydrogen and potassium ions.