Gas Transport

Question 1

what is the Bohr effect?

Answer 1

CO2 replaces O2 on the hemoglobin at the tissue (shift O2-Hb dissociation curve to the right)

Question 2

what is the Haldane effect?

Answer 2

O2 replaces CO2 on the hemoglobin in the lungs (shift O2-Hb dissociation curve to the left)

Question 3

what is the PO2 for oxygenated blood leaving the lungs?

Answer 3

104

Question 4

what is the PO2 for reduced blood returning to the lungs from the tissues?

Answer 4

40

Question 5

what factors can cause a shift of the O2-Hb curve to the right?

Answer 5

increased H+ (pH)
increased CO2
increased temperature
increased 2,3 BPG

Question 6

what does it mean if the O2-Hb curve shifts to the right?

Answer 6

O2 falls off of Hb sooner

Question 7

what scenario would cause a shift of the O2-Hb curve to the right?

Answer 7

exercise

Question 8

what factors can cause a shift of the O2-Hb curve to the left?

Answer 8

decreased H+ (pH)
decreased CO2
decreased temperature

Question 9

what does it mean if the O2-Hb curve shifts to the left

Answer 9

oxygen binds to Hb faster

Question 10

if the O2-Hb curve shifts to the right, where is it located?

Answer 10

tissue
(O2 from blood into tissue)

Question 11

if the O2-Hb curve shifts to the left, where is it located?

Answer 11

lungs

Question 12

how is 70% of CO2 transported?

Answer 12

as bicarbonate ion + Hydrogen ion (HCO3 + H+)

Question 13

how is 23% of CO2 transported?

Answer 13

as carbaminohemoglobin (HbCO2)

Question 14

how is 7% of CO2 transported?

Answer 14

dissolved gas

Question 15

how is 98.5% of O2 transported?

Answer 15

bound to hemoglobin

Question 16

how is 1.5% of O2 transported?

Answer 16

dissolved O2 gas