NEETBiologyChemical Coordination and IntegrationMCQ+4 / −1
Figure shows human urinary system with
structures labelled A to D. Select option which
correctly identifies them and gives their
characteristic and/or functions.


- AA - Adrenal gland - located at the anterior part of kidney. Secrete catecholamines which stimulate glycogen breakdown.
- BC - Medulla - inner zone of kidney and contains complete nephrons.
- CB - Pelvis - broad funnel shaped space inner to hilum, directly connected to loops of Henle.
- DD - Cortex - outer part of kidney and do not contain any part of nephrons.
View written solutionFree
Correct answer: A
In the given figure, A is adrenal gland which secretes two catecholamines; adrenaline (epinephrine) and noradrenaline (norepinephrine). Adrenaline increases the conversion of glycogen to glucose providing quick energy for “fight or flight” response. B is renal pelvis which is a sac like cavity of the kidney leading to ureters, is not directly connected to loop of Henle. C is medulla, the inner region of kidney containing loop of Henle, collecting ducts and ducts of Bellini. D is cortex which has proximal and distal convoluted tubules and contains Malpighian corpuscles.
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