Endocrinology.mcq

. Steroid hormones are secreted by all except:
(a) Ovary (b) Testes
(c) Adrenal medulla (d) Placenta
2. Receptors within cell cytoplasm are specific to:
(a) Peptide hormones (b) Protein hormones
(c) Cortisol (d) Catecholamine
3. The cation essential for adenyl cyclase activity to form cAMP is:
(a) Sodium (b) Magnesium
(c) Calcium (d) Potassium
4. The weight of normal pituitary gland is:
(a) 1 gm (b) 5 gm
(c) 10 gm (d) 25 gm
5. The maximum number of hormone secreting cells of anterior pituitary are:
(a) Somatotropes (b) Thyrotropes
(c) Corticotropes (d) Gonadotropes
(a) Lactotropes
6. Which of the following is not an effect of growth hormone in glucose metabolism:
(a) Diminished glucose uptake by cell
(b) Decreased glucose utilisation
(c) Suppression of insulin secretion
(d) Decreased sensitivity to insulin
7. Chondrocytes are converted to osteogenic cells under influence of:
(a) Growth hormone (b) Testosterone
(c) Corticosteroids (d) Thyroxine
8. Normal growth hormone level in a child or adolescent is:
(a) 1 ng/ml (b) 2-3 ng/ml
(c) 6 ng/ml (d) 10-15 ng/ml
9. Which of the following is inhibited by somatostatin:
(a) Growth hormone (b) Insulin
(c) Glucagon (d) All of the above
10. Both oxytocin and vasopressin (ADH) have 9 amino acids with partial functional similarities except for amino acid structure involving:
(a) Arginine (b) Valine
(c) Histidine (d) All of the above
11. When peroxides system is blocked or congenitally absent which step of thyroid hormone synthesis is affected:
(a) Iodine trapping (b) Iodine oxidation
(a) Organification of iodine
12. Among thyroid hormones which is rapid acting:
(a) T4 (b) Reversed T3
(c) T3 (d) All equal




13. The exophthalmos in Graves' disease is due to:
(a) Increase in size of eyeball
(b) Increased blood lymph content of eye
(c) Oedema of retro-orbital tissue
(d) All of the above
14. In myxoedema, serum findings are all except:
(a) Low T3, T4 (b) High TSH
(c) Low cholesterol (d) Normal sugar
15. Cortisol is secreted from:
(a) Zona glomerulosa (b) Zona fasciculata
(c) Zona reticularis (d) B + C
16. The degraded adrenal hormones are mainly secreted in:
(a) Urine (b) Bile
(c) Sweat (d) Stool
17. Normal plasma aldosterone is:
(a) 1 ng / dl (b) 6 ng / dl
(c) 12 ng / dl (d) 18 ng / dl
18. Banting and Best, isolated insulin in:
(a) 1890 (b) 1902
(c) 1922 (d) 1942
19. Normal level of ketone bodies in plasma is:
(a) 1 mEq / L (b) 5 mEq / L
(c) 10 mEq / L (d) 20 mEq / L
20. What is asthenia:
(a) Tall lanky body (b) Lack of energy
(c) Lack of adipose tissue (d) None of the above
21. Persistent hypoglycemia is dangerous because of:
(a) Shock (b) Brain damage
(c) Renal shut down (d) Visual impairment
22. Normal daily calcium excretion in urine is:
(a) 50 mg (b) 100 mg
(c) 250 mg (d) 500 mg
23. Conversion of Vit D3 to 1-25 dihydroxycholecalciferol occurs in which part of nephron:
(a) Glomerulus (b) Proximal tubules
(a) Distal tubules
24. Which of the following conforms to hydroxyapatite:
(a) Ca8 (PO4)6 (OH)2 (b) Ca10 (PO4)6 (OH)2
(c) Ca10 (PO4)8 (OH)2 (d) Ca8 (PO4)8 (OH)2
25. The bacterium responsible for caries can be all except:
(a) Sterptococci (b) Diphtheroid
(b) Staphylococci (d) Lactobacilli

Endocrinology:ans:mcq
1.c 2.c 3.b 4.a 5.a 6.c 7.a 8.c 9.d 10.a 11.b 12.c 13.c 14.c 15.d 16.a 17.b 18.c 19.a 20.b 21.b 22.b 23.b 24.b 25.c