Question

1. The baroreceptor will respond to high blood pressure by doing which of the following?

a) increasing stroke volume

b) decreasing heart rate
c) increasing SYN activity

d) both A and B

2. A person is suffering from high levels of Na+ known as hypernatremia, which of the following might occur to restore homeostasis?

a) adrenal glands will secrete adrenaline

b) the RAS pathway will be activated

c) a greater number of Na+/K+ will be created, causing an increase in Na+ reabsorption

d) none of the above

3. If the body is releasing high levels of ANG 2, which of the following will occur?

a) action potentials down the vagus nerve will decrease

b) aquaporin production in the distal convoluted tubule will decrease

c) mean arterial pressure will increase

d) all of the above

4. If the descending loop of Henle were damaged, what would occur?

a) water reabsorption would be reduced

b) glucose reabsorption would be inhibited in the proximal tubule

c) aldosterone release would be inhibited

d) Na+, K+, and Cl- reabsorption would be increased

d) Both A and B

Answer 1

1. BARORECEPTOR response to high BP Ans. Decrese Heart rate.

A. Increase Parasympathetic activity - cardioinhibition centre

B. Decrease sympathetic activity.- cardioacceleration centre

C.decrese heart rate

D.vasodilation

E.Decrese Stroke volume

2. Ans non of above .

1. No role of adrenaline to compensate raised N+ .

2. RAS activation causes more Na H2O retention

3 . More pump lead to more Na in blood . Worsening condition.

3 ) C mean arterial pressure increases.due to vasoconstriction action of angiotensin 2.

Angiotensin secrete ADH for water resorption so aquqporin channel should raised .

It increse sympathetic activity

4. If descending loop oc henle is damaged then water absorption is reduced

No affect on glucose absorption.

No aldosterone affect as it stimulate only on Na + reduced .