help- kidney

[ch5112]

Can anyone help me with answering these questions?

I have mid-semester exam coming up and there are no answers provided for these practice exam..

Q1.An obsessive water drinker ingests approximately 10 litres of water within a day.

Select whether each of the following would increase, decrease or not change with the ingestion of 10 litres of water within a day.

(i) ECF Osmolarity.

(ii) Mean Arterial Pressure.

(iii) Vasopressin release from pituitary.

(iv) Water reabsorption in the kidney

(v) Renin release from granular cells

(vi) Angiotensin II levels

(vii)Aldosterone levels

(viii) Sodium reabsorption in the kidney

Q2. In a normal kidney, glomerular filtration rate would decrease in all of the following conditions EXCEPT FOR:

(a)An increase in the Bowman's capsule hydrostatic pressure

(b)A decrease in the mean arterial pressure from 85mmHg to 60mmHg

©A decrease in Bowman's capsule oncotic pressure

(d)A decrease in plasma hydrostatic pressure

(e)An increase in plasma oncotic pressure

I think correct answer is (a) since the pressure can't be altered in bowman's capsule?

Q3.Predict which one of the following people would initially produce the greatest urine volume

(a)A person who is given some synthetic Vasopressin which acts in the same manner as the natural hormone

(b)A person who drinks 500mL of isotonic sports drink

©A person who drinks 500mL of water

(d)A person who eats salty chips and then drinks 500mL of isotonic sports drink

(e)A person who eats salty chips and then drinks 500mL of water

I think correct answer is ©?

Q4. Which of the following statements in regards to glucose reabsorption in the proximal tubule is INCORRECT?

(a)Glucose concentration is higher in the tubular lumen than within the cell

(b)Glucose concentration is higher in the cell than in the interstitial cell

©Glucose diffuses out of the basolateral side of the cell using the GLUT protein

(d)A decrease in the activity of the Na+/K+-ATPase would decrease glucose reabsorption

(e)Glucose reabsorption occurs via secondary active transport

I think correct answer is (a)

Can anyone correct my answers?

Edited October 2, 2012 by ch5112