Question

8.
Mark the odd one w.rt. hormone, its source and
function:
(1)
ADH
Adenohypophysis Increase loss of
water through
urine
(2)
Aldost-
erone
Adrenal cortex Stimulates the
reabsorption of
Na* and water
from DCT
(3)
ANF
SA node of heart Causes
vasodilation and
increase blood
volume but
decreases
blood pressure
Renin
Liver
Converts
angiotensinogen
into angiotensin II​

Answer 1

(

(2)Aldosterone

Adrenal cortex

Stimulates the reabsorption of Na* and water from DCT

Option 2 is correct w.r.t. source and function.

1)ADH

• The pituitary gland secretes antidiuretic hormone into the blood, which causes the kidneys to release less water and reduces the amount of urine produced.
• Antidiuretic hormone is produced by a region of the brain known as the hypothalamus.
• The body makes less pee when its ADH level is high. A low level causes more urine to be produced.
• Antidiuretic hormone, which can result in low levels of sodium in the blood and water retention in the body, may be released in large amounts by some tumour forms..

2.Aldosterone

• Adrenal cortex of adrenal glands secrete a hormone called aldosterone (ALD), which works by controlling the amounts of sodium and potassium in your blood to help control blood pressure.
• The electrolytes sodium and potassium are.

3.ANF

• A 28 amino acid polypeptide hormone called atrial natriuretic factor (ANF) is released primarily by the heart's atria in response to atrial strain.
• Antagonizing renal vasoconstriction, inhibiting renin secretion, and increasing sodium excretion and GFR are all effects of ANF on the kidney.

4.Renin

• The initial and rate-limiting step in the renin-angiotensin-aldosterone system, catalysed by renin, is the conversion of angiotensinogen to angiotensin I.
• Renin has a specific affinity for angiotensinogen; hence, renin inhibitors have a single target.
• The kidney's juxtaglomerular cells (JGCs), which release renin from storage granules, are the primary source of renin.

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