ENDOCRINE PHYSIOLOGY quiz 2 Adrenal Medulla sent to students.pptx

Physiology

1. ENDOCRINE PHYSIOLOGY QUIZ 2 Adreenal Medulla

2. Question 1 The AMINO ACID common in the structure of adrenaline, noreepinephrina and dopamine is ?... Tyrosine Glutamate Thyroxine Insulin aSPARTATE

3. Question 2 Most of the catecholamines output in the adrenal vein is..... A. Epinephrine B. Norepinephrine C, Dopamine D. DOPA E all are correct

4. Question 3 The following is an example of an intracellular chemical messenger? Growth Hormone Hormone receptor Cyclic AMP Neurotransmitter ribosomes

5. Question 4 The function of Inositol triphosphate (IP 3 ) is … It releases Calcium ions into the cytoplasm of target cells It binds with troponin C causing muscle contraction It converts ATP to cAMP It binds to PIP 2 converting it to DAG All are correct

6. Question 5 Which of the following can be used as a laboratory determination of pheochromocytoma? A. Vinillymandelic Acid B. Suphates C, Methyl D. Low density Lipoprotein E. Phosphodiesteras

7. Question 6 Which neurotransmitter triggers the exocytosis of Norepinephrine and epinephrine? Glutamate Acetylcholine GABA Oxytocin ADH

8. Question 7 Norepinephrine and epinephrine both increase the force and rate of contraction of isolated heart via its action on; A. Alpha 1 adrenergic receptors B. Alpha 2 adrenergic receptors C. Beta 1 adrenergic receptors D. Beta 2 adrenergic receptors E. Beta 3 adrenergic receptors

9. Question 8 Epinephrine dilates the blood vessels in skeletal muscle and the liver via which type of receptors?... A. Alpha 1 adrenergic receptors B. Alpha 2 adrenergic receptors C. Beta 1 adrenergic receptors D. Beta 2 adrenergic receptors E. Beta 3 adrenergic receptors

10. Question 9 what is the effect of Epinephrine and norepinephrine on Metabolic rate A. No effect B. It increases C. It reduces D. Both B and C are correct E. It inhibits

11. Question 10 What is the half life of catecholamines? About.... A. 2 seconds B. 2 minutes C. 2 hours D. 20 minutes

12. Question 11 Injected dopamine produces the following effect, which is..... A. Vasodilation by releasing norepinephrine B. Vasodilatation in mesentery C. decrease in heart rate via beta receptors D. decrease in systolic blood pressure.

13. Question 12 The structure shown here is called A, Tryrosine B. Catechol C. Cholesterol D. Benzene

14. Question 13 Catecholamines are synthesized in the cells called...... A. Chromaffin cells B. Follicular Cells C. Somatotrophes D. Zona glomerulosa

15. Question 14 The adrenal medulla secretes catecholamines which include A. epinephrine, norepinephrine and cortisol B Aldosterone, norepinephrine and glutamate C. epinephrine, norepinephrine and serotonin D. epinephrine, norepinephrine and dopamine

16. Question 15 All the following will triger epinephrine secretion, EXCEPT A. Anticipation of danger or harm B. Pain, trauma, C. Hypovolaemia from haemorrhage or fluid loss D. Hypotension, E. All are correct

17. Question 16 The effect of Epinephrine includes All EXCEPT.. A. During exercise, epinephrine via β2 receptors increases blood supply (by causing vasoconstriction). B.It also increases glycogenolysis in muscle and releases glucose into circulation. C. On eyes. Epinephrine causes dilation of the pupil (mydriasis) by contracting dilator pupillae (radial) muscle D. via β receptors causes relaxation of the ciliary muscle producing flattening of the lens. .

18. Question 17 Which of the following is not a CLINICAL FEATURE OF PHEOCYTOCHROMA A. Episodic or non-episodic hypertension with postural drop B. Bradycardia C. palpitation D. sweating, E. All are correct

19. Question 18 Which of the following is not the effect of Epinephrine on Carbohydrate Metabolisms? A. Glycogenolysis is stimulated in the liver B. Glycogenesis is increased in the liver by inhibition of the enzyme glycogen synthase. C. Gluconeogenesis, i.e. hepatic production of glucose from lactate, amino acids and glycerol is increased E. Insulin secretion is inhibited.

20. Question 19 Which of the following is correct, regarding the effect of epinephrine? A. decrease O 2 consumption (by 20–40%) B. increases CO 2 output C. Reduces basal metabolic rate and respiratory quotient D. decreases heat production due to stimulation of cellular oxidative processes.

21. Question 20 Which catecholamine is released in large quantity from the adrenal Medulla A. epinephrine B. norepinephrine C. Noreadrenaline D. Dopamine

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