Tubular Resoption And Secretion

Question 1

Agniotensin I is cleaved by

Answer 1

Renin

Question 2

RAAS is best known hormonal system involved in regulating

Answer 2

Sodium

Question 3

Mesangial cells associated with what kind of feedback

Answer 3

Tubular glomerular

Question 4

What enzyme converts angiotensin I to angiotensin II

Answer 4

ACE

Question 5

How is renin released

Answer 5

NaCl at the begininning of macula dense activates COx 2, increases PGE2 and PGI2, increased renin secretion from granular cells

Question 6

What are granular cells stimulated by

Answer 6

B1 adrenergic receptors

Question 7

Low pressure at AA induces what to be released

Answer 7

Renin

Question 8

What are the effects of angiotensin II

Answer 8

Constricts arteriolar smooth muscle, causing MAP to rise

Stimulate Na absorption

Stimulates hypothalamus to release ADH and stimulate thirst center

Question 9

What are the effects of angiotensin II

Answer 9

Constricts efferent arteriosus-> decreases peritubular capillary hydrostatic pressure and increases reabsorption

Causes glomerular mesangial cells to contract, decreasing surface area available for filtration.