Final Review: Blood Gas Transport

Question 0

How much O2 does arterial blood carry at rest?

Answer 0

19.4 ml O2/dl

Question 1

How much O2 can 1 gram of hemoglobin transport?

Answer 1

1.34 ml

Question 2

How much O2 does returning venous blood carry?

Answer 2

14.4 ml O2/dl

Question 3

What is the O2 utilization coefficient at rest?

Answer 3

25%

Question 4

About 70% of CO2 is carried in the blood as what?

Answer 4

Bicarbonate ion

Question 5

What does an increase in blood partial oxygen pressure result in?

Answer 5

Increase in bound oxygen

Question 6

What factors cause mor oxygen to be released from hemoglobin?

Answer 6

Decrease in pH
Increase in CO2
Increase in BPG
Increase in temperature

Question 7

When does the Bohr effect occur?

Answer 7

When an increase in blood CO2 causes O2 to be displaced from hemoglobin (shifts curve to right)

Question 8

What is the Haldane effect?

Answer 8

The displacement of CO2 that occurs when hemoglobin binds with O2 in the lungs

Question 9

What is the limiting factor for chemical reactions when intracellular pO2 is above 1 mmHg?

Answer 9

ADP

Question 10

What condition would show a normal pO2 and bright red blood?

Answer 10

CO poisoning

Question 11

How do RBC’s maintain electrical neutrality?

Answer 11

They utilize a bicarbonate/Cl- ion anti-transporter

Question 12

When does pulmonary edema occur?

Answer 12

When pulmonary capillary pressure exceeds 25 mmHg

Question 13

What are the most common causes of pulmonary edema?

Answer 13

Left heart failure
Mitral valve disease
Breathing noxious substances