Question

Match the region of the nephron with the ions/molecules that are absorbed by it:

	Region		Entities absorbed
A.	DCT	I.	Glucose, ${\mathrm{Na}}^{+}$, ${\mathrm{Cl}}^{-}$, $H_{2}O$
B.	Ascending LOH	II.	$H_{2}O$
C.	Descending LOH	III.	${\mathrm{Na}}^{+}$ and ${\mathrm{Cl}}^{-}$
D.	PCT	IV.	${\mathrm{Na}}^{+}$, ${\mathrm{Cl}}^{-}$ and $H_{2}O$

• A. A-IV, B-III, C-II, D-I
• B. A-III, B-IV, CII-, D-I
• C. A-I, B-II, C-III, D-IV
• D. A-II, B-I, C-III, D-IV

Answer 1

The correct option is A A-IV, B-III, C-II, D-I

Region	Entities absorbed
PCT	Glucose, ${\mathrm{Na}}^{+}$, ${\mathrm{Cl}}^{-}$, $H_{2}O$
Descending LOH	$H_{2}O$
Ascending LOH	${\mathrm{Na}}^{+}$ and ${\mathrm{Cl}}^{-}$
DCT	${\mathrm{Na}}^{+}$, ${\mathrm{Cl}}^{-}$ and $H_{2}O$

PCT: Proximal Convoluted Tubule
DCT: Distal Convoluted Tubule
LOH: Loop of Henle contributes to counter-current mechanism
Descending limb of Loop of Henle is impermeable to solutes and is only permeable to water.
Ascending limb of Loop of Henle is impermeable to water and is only permeable to solutes.
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