In the presence of atriopeptin (atrial natriuretic factor), the greatest fraction of filtered sodium is reabsorbed in the-
a. proximal tubule
b. thick ascending limb of the loop of Henle
c. distal tubule
d. cortical collecting duct
e. medullary collecting duct
2007-02-27 16:36:08 · 4 answers · asked by minime 1 in Science & Mathematics ➔ Medicine
b.
2007-02-27 16:41:01 · answer #1 · answered by Anonymous · 0⤊ 1⤋
ANF is a hormonal substance produced by the right atrium of the heart that stimulates the excretion of sodium and water by the kidneys and helps regulate blood pressure.
see - http://en.wikipedia.org/wiki/Renal_physiology
"EXTRACELLULAR HOMEOSTASIS " - substance sodium
a. THIS IS THE CORRECT ANSWER
Reabsorption is 65%
b. 25%
c. 5%
d. is out because the ANF would INHIBIT the sodium reabsorption in the CD
e. 5%
2007-02-27 21:17:20 · answer #2 · answered by Julia Warhol 3 · 0⤊ 0⤋
I am 'nit-picking' ... but this is a physiology question!
2007-02-27 17:28:53 · answer #3 · answered by Doctor J 7 · 0⤊ 1⤋
c
2007-02-27 19:11:10 · answer #4 · answered by J.SWAMY I ఇ జ స్వామి 7 · 0⤊ 2⤋