1. All of the following are mechanisms of renal autoregulation of GFR EXCEPT: a.

ID: 3513237 • Letter: 1

Question

1. All of the following are mechanisms of renal autoregulation of GFR EXCEPT:

a. Sympathetic stimulation of afferent arterioles.

b. The action of angiotension on afferen and efferent arterioles.

c. the action of ANP on mesangial cells.

d. Vasoconstriction in response to stretching of afferent arteriole walls.

e. Secretion of ADH in response to increased osmolarity of blood.

2. Passive reabsorption of fluid between tubule cells is called:

a. Transcytosis

b. Transcellualar reabsorption

c. facultative reabsorption

d. paracelluar reabsorption

e. obligatory reabsorption

3. Sodium ion transporter in the proximal convoluted tubule promote the reabsorption of ALL of the following EXCEPT:

a. ammonium ions.

b. bicabonate ions

c. chloride ions

d. glucose

e. amino acids

1 . Answer is E..

The other four are the mechanisms of renal autoregulation of GFR ...

Osmolarity is sensed in hypothalamus by neurons, known as osmoreceptors and these stimulated secretion from neurons that produce ASH..

2. The answer is D paracellular reabsorption .

There is no energy expenditure and hence unmediated and passive down the concentration gradient.

3 The answer is a. ammonium salts .

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