chapter 13

Question 1

Daltons law

Answer 1

total pressure is the sum of partial pressures of all gases in a mixture

Question 2

what is the barometric pressure at sea level

Answer 2

760 mmHg

Question 3

what is the partial pressure of oxygen

Answer 3

159 mmHg

Question 4

What percentage of saturation of hemoglobin should young healthy people have

Answer 4

young people should have a saturation of 97%

Question 5

what is the alveolar partial pressure

Answer 5

103 mmHg

Question 6

what is the equation for partial pressure of a gas

Answer 6

barometric pressure x concentration fraction

Question 7

what is the partial pressure of carbon dixiode

Answer 7

0.23 mmHg

Question 8

what is the partial pressure of nitrogen

Answer 8

600 mmHg

Question 9

from the alveoli, oxygen is transported via

Answer 9

1. bound to Hb
2. dissolved in the blood

Question 10

VO2 depends on

Answer 10

1. O2 delivery to tissues
2. O2 use in mitochondria

Question 11

partial pressure of water vapour

Answer 11

47mmHg

Question 12

what is the saturation of gases in the airways

Answer 12

100%

Question 13

Alveolar air is altered by (2)

Answer 13

• diffusion of O2 to the blood
• entry of CO2 from the blood

Question 14

average alveolar PaO2

Answer 14

103 mmHg

Question 15

each gram of Hb can combine with ____ mL O2

Answer 15

1.34

Question 16

what is a-v02 difference

Answer 16

the arteriovenous difference shows the amount of oxygen extracted by tissues
250 ml oxygen a min for men and 200 ml for women

Question 17

what conditions create the bohr effect

Answer 17

• increased pressured of carbon dioxide
• increased temperature
• decreased pH
• increased 2,3 DPG

Question 18

what is the bohr effect

Answer 18

a decrease in the amount of oxygen associated with hemoglobin in response to a lowered blood pH

Question 19

what is 2,3 DPG

Answer 19

• byproduct of glycolysis
• increases with intense exercise and may increase due to training
• binds with Hb and reduces Hb affinity for oxygen

Question 20

myoglobin can only store ___ iron atom and ___ oxygen molecule

Answer 20

1 & 1

Question 21

What are the three ways that carbon dioxide is transported

Answer 21

1. bound to Hb
2. dissolved in plasma (about 5%)
3. plasma bicarbonate

Question 22

what is the haldane effect

Answer 22

Hb interaction with oxygen reduces its ability to combine with carbon dioxide (aids in releasing carbon dioxide in the lungs)

Question 23

3 factors to increase VO2 during exercise

Answer 23

1. right shift of O2 dissociation curve
2. decreased tissue PO2
3. increased cardiac output

Question 24

what date did we get ahead of schedule

Answer 24

october 19