30345 netter110

30345 netter110



va" Reabsorption


RENAL PHYSIOLOGY

Proximal tubule Loop of Henie i Distal tubule |

Factors That Stimulate Factors That Inhibit Reabsorption    Reabsorption

Dopamine

Angiotensin II Sympathetic nerves

Sympathetic nerves Aldosterone

Atiial natriuretic peptide (ANP)

J. Perkins

MS. MFA


Figurę 6.8 Renal Na Reabsorption----

v arge amounl of Na* is filtered by the glomeruli each clay. Tłiis fil Normally, 99% or morę of Ihis filtered NaT is reabsorbed along the *rcd load (EL) is calculated as follows:    ncphron li.e., only 100 to 200 mEq/day is excreted). Depicted here

are ihe primary mcchanisms for Na' reabsorption. Also summanzed FL - CFR X Plasma |Na*| or    is the per cent of the filtered load of Na' reabsorbed by each seg-

25,200 mEq/day = 180 L/day x 140 mEq/l    mcnt and some of the factors that either stimulate or inhibit reab-

sorption in these segments.

127


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