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ENDOCRINOLOGY
1. Insulin increases:-
a. Glycogen synthesis,
b.Fat synthesis,
c. Protein synthesis etc.
2. Insulin is a - Convert glucose into glycogen
3. Insulin is secreted by: Beta cells of pancreas
4. In fetus, secretion of insulin begins by: 3 months
5. Insulin secretion is inhibited by: Epinephrine
6. Delta cells of pancreas secrete: Somatostatin
7. Hormones acting on intracellular nuclear receptors:
a. Steroids,
b.Thyroid hormones,
c. Vitamin D etc.
8. cGMP mediates action of: NO (cellular signalling molecule)
9. Insulin acts throught: -Tyrosine kinase activity
10. Hormones belonging to steroid receptor family:
11. Vitamin D3,
12. Thyroid
13. Effect of parathormone:
a. Stimulates osteoclastic activity,
b. Augments absorption of calcium from the gut
14. Effect of calcitonin:
a. Opposite to that of PTH,
b. Lowers serum calcium,
c.Acts by decreasing osteoclasis (bone resorption)
15. Active form of calcium: Ionized form
16. A decrease in concentration of free calcium ions inplasma results in:
a. Increased neuromuscular irritability & tetani,
b. Chvostek's sign etc.
17. ECG finding of hypocalcemia: Lengthening of the QT interval
18. ACTH & TSH are secreted by: Anterior pituitary gland
Vasopressin & oxytocin are released by: Posterior pituitary gland.jpeg)
