review lecture 1

Question 1

if renal blood flow increases, capillary hydrostatic pressure and GFR must also increase

TRUE or FALSE

Answer 1

FALSE (depends)

Question 2

what is lung compliace and elastance determined by?

Answer 2

1. elasticity of type 1 alveolar cells and the extracellular matrix (collagen and elastin)
2. Alveolar fulid-fulid lining the inner wall of the alveoli

Question 3

How is oxygen diffusion determined?

Answer 3

1. partial pressure gradient
   -composition of outside air
   -how much air you bring in
   -resistance (athsma)
   -compliance (pulmonary fibrosis)
2. Properties of your diffusion barrier
   -surface area (emphasema)
   -barrier permiability (pulmonary fibrosis)
   -diffusion distance (pulmonary edema)

Question 4

how much does Hb get saturated with O2

Answer 4

98% bound to Hb
2% in plasma

Question 5

how much does Hb get saturated with CO2

Answer 5

3% in plasma
27% Hb-CO2
70% HCO3- which goes into plasma after made (exchanges with Cl-)