The reabsorption of the sodium from glomerular filtrate is regulated by the hormone _____________.

Glucagon

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Secretin

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Aldosterone

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Adrenaline

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Solution

The correct option is C Aldosterone
Aldosterone is secreted by the outer layer of the adrenal gland. When aldosterone is present in the blood, all the $N a^{+}$ in the filtrate is reabsorbed b the epithelial cells of DCT and collecting duct. Retaining $N a +$ raises the osmotic pressure of the blood and reduces water loss from the body.

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