Thank you 7. Which of the following is not response to low blood pressure? a. In

Question

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7. Which of the following is not response to low blood pressure? a. Increase in cardiac output b. Water conservation in kidney c. Vasoconstriction d. Inhibition of thirst and water intake 8. How would drinking a large amount of water affect osmolality and volume of the ECF? a. Decreased osmolality and increased volume b. Both would increase c. No change in osmolality and increased volume d. No change in either 10. Which of the following does not happen in response to increased blood pressure? a. increased GFR b. natriuretic peptide secretion c. thirst stimulation d. decreased sympathetic stimulation of the heart

Explanation / Answer

7) Answer here is D--------------low BP due to volume depletion

explination for 7: in case of low BP the Baro receptor mechanism gets activated which leads to Increase in Heart rate by incresing Sympathetic Discharge, which leads to Increase in Cardiac Output,

Vaso constriction is obvious vascular response to Low BP.

Low BP lead to low renal perfusion which causes Renal conservation of Water and solutes byRenin-Angiotensin mechanism activation which helps to riase the BP as well.

8) Answer here is A

explination for 8: Large amount of water intake leads to decreased osmolality and increased volume of ECF.

10)Answer here is C---------------increase in BP due to volume overload.

explination for 10: increase in BP leads to increased firing of Baroreceptors which ultimately deceases Sympathetic out flow to CVS

Incrase in BP due to volume overload leads to increased secretion of ANP which further helps in incresing GFR and Natriuresis(Na+ excretion by Kidney)

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