deck_1641415 Flashcards Preview

3 - Urinary > deck_1641415 > Flashcards

Flashcards in deck_1641415 Deck (5):
1

What is the major cation lost in sweat?

Sodium

2

How much water is lost in each part of the nephron?

H20PCT - 65%Loop of henle Descending - 10%Ascending - 0%DCT - 10%CD - 5%

3

What are the three major driving forces which move Na+ from tubular cells into the peritubular capillaries?

Hydrostatic pressure in the intracellular spaceHigher oncotic pressure in peritubular capillariesLower hydrostatic pressure in peritubular cappilaries

4

What histological features of the epithelial cells lining the descending limb of the loop of Henle indicate that they are not involved in active transport?

Squamous epithelium, no brush border, no mitochondria

5

Why does the process of glomerular filtration facilitate the reabsorption of solute and solvent from the inter-cellular spaces?

~20% of solute and water filtered in glomerulus enters kidney tubule. This leaves protein behind in peritubular capillaries thus higher oncotic pressure; this then draws water and solute into the blood in these capillaries.