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Physiology

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Endocrinology

Question
11 out of 14
 

Parathyroid hormone is responsible for: (DNB Dec-2009)



A Increased production of 1, 25 dihydroxycholecalciferol in kidney

B Increase in number of osteoblasts

C Decreased reabsorption of calcium ions in kidney

D Decreased urinary phosphate excretion

Ans. A Increased production of 1, 25 dihydroxycholecalciferol in kidney

Principal Actions of Parathyroid Hormone

1. Increase bone resorption and metabolize calcium ions. Q

2. Increase plasma Ca++ and reduce plasma phosphate. Q

3. Increase phosphate excretion in urine by decreasing its reabsorption in PCT.Q

4. Increase reabsorption of Ca++ in DCI Q

5. Increase the formation of 1, 25 dihydroxycholecalciferol Q

6. Increase Ca++ absorption from intestine via 1,25 dihydroxycholecalciferol Q

Endocrinology Flashcard List

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