Flashcards in Fluid compartments Deck (14):
How is fluid divided in the body?
Total body water=.6(wt); 2/3 ECF, 1/3ICF; of ECF, 3/4 interstitial, 1/4 plasma
What is the osmolarity of the three major compartments?
What happens in cases of diarrhea?
osmolarity is constant, ecf decreases
What happens in Water deprivation?
Osmolarity increases, ecf and icf decrease
What happens in adrenal insufficiency?
osmolarity decreases, icf increases and ecf decreases
what happens with infusion of isotonic NaCl
osmolarity constant, ecf increases
what happens with high NaCl intake
osmolarity increases, icf decreases, ecf increases
what happens in SIADH
osmolarity decreases, icf increases more than ecf
What are the layers of the glomerular filtration membrane and how much does each do?
endothelial cells-not much; BM-main barrier; epithelial cells (podocytes)- additional barrier
what is the basic composition of ultrafiltrate? What gets in?
plasma minus proteins. 42 A-not filtered.
L2-L4. Hypogastric nerve. detrusor and trigone muscles
S2-S4. Pelvic nerves->detrusor and trigone. Pudendal->urogenital diaphragm
What types of sympathetic receptors are on internal sphincter/detrusor.
detrusor=mostly beta2. internal sphincter=mostly alpha