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Figure shown human urinary system with structures labelled A to D. Select option which correctly identifies them and gives their characteristics and/or functions.

1. B-pelvis-broad funnel shaped space inner to hilum, directly connected to loops of Henle.
2. C-Medulla-inner zone of kidney and contains complex nephrons.
3. Cortex - outer part of kidney and do not contain any part of nephrons
4. A-Adrenal gland - located at the anterior part of kidney. Secrete Catecholamines which stimulate glycogen breakdown.

Correct answer: A-Adrenal gland - located at the anterior part of kidney. Secrete Catecholamines which stimulate glycogen breakdown.

Solution

The adrenal gland lies on the anterior/superior aspect of each kidney and secretes catecholamines like adrenaline and noradrenaline, which promote glycogen breakdown. The other options misidentify kidney regions or their functions.

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