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Which one of the following four secretions is correctly matched with its source, target and nature of action?

  1. A
    Gastrin | Stomach lining | Oxyntic cells | Production of HCl
  2. B
    Inhibin | Sertoli cells | Hypothalamus | Inhibition of secretion of gonadotropin releasing hormone
  3. C
    Enterokinase | Duodenum | Gall bladder | Release of bile juice
  4. D
    Atrial Natriuretic Factor (ANF) | Sinu atrial node (SAN) M-cells of Atria | Juxtaglomerular apparatus (JGA) | Inhibition of release of renin

Solution & Step-by-step Explanation

Gastrin is a polypeptide hormone secreted by G-cells in the stomach lining. Its primary target is the oxyntic (parietal) cells of the stomach, where it stimulates the production of hydrochloric acid ().Inhibin acts on the anterior pituitary, not the hypothalamus.Enterokinase activates trypsinogen in the small intestine, not the gall bladder.While inhibits renin, it is released from the atrial walls in response to high blood volume, not specifically the .

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Which one of the following four secretions is correctly matched with its source, target and nature of action?
A
Gastrin | Stomach lining | Oxyntic cells | Production of HCl
B
Inhibin | Sertoli cells | Hypothalamus | Inhibition of secretion of gonadotropin releasing hormone
C
Enterokinase | Duodenum | Gall bladder | Release of bile juice
D
Atrial Natriuretic Factor (ANF) | Sinu atrial node (SAN) M-cells of Atria | Juxtaglomerular apparatus (JGA) | Inhibition of release of renin

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