Question

choose one of the options

Theoretically, on a hot day when you are sweating a lot, this might lead to a [positive or negative] balance. Which of the following statements is not a way the body might respond to regain stable balance in this situation?

a. Release hormonal signals triggering salt loss through the kidneys

b. Release hormones triggering salt retention in the kidneys

c. Release hormonal signals triggering hunger for salty foods

Which of the following outcomes would occur if the ECF volume increased significantly?

a.Body cells would swell due to hypotonicity.

b. Body cells would shrink due to hypertonicity.

c. A drop in arterial blood pressure would occur.

d. An increase in arterial blood pressure would occur.

choose one of the options for each

ECF osmolarity is important for maintaining consistent blood pressure/ or avoiding hyper- or hypotonicity and is primarily maintained by controlling water/ salt/ or glucose balance through vasopressin/aldestosterone

Answer 1

Ans 1:- a. Release hormonal signals triggering salt loss through the kidneys.

Is wrong statement because when there is excess fluid loss from the body the RAAS pathway is activated which cause release of aldosterone which act on kidney and increases salt and water reabsorption.

Ans2:- d) An increase in arterial blood pressure would occu

Concept:- ECF INCLUDE 5% PLASMA VOL , 15% INTERESTITIAL VOL AND 1% TRANSCELLULAR COMPARTMENT VOL.

so when ECF vol increases plasma vol should also increase . Increases in plasma vol will increase end diastolic vol which will increase streach of ventricular wall. And according to Frank starling law cardiac output will also increases ---- increasing the arterial pressure.