Question 1

What does a P₅₀ of 30 indicate?

Accepted Answer

A)  a rightward shift of the curve meaning a decreased affinity of hemoglobin for O₂ 
B)  a rightward shift of the curve meaning an increased affinity of hemoglobin for O₂ 
C)  a leftward shift of the curve meaning a decreased affinity of hemoglobin for O₂ 
D)  a leftward shift of the curve meaning an increased affinity of hemoglobin for O₂ 
A)  a rightward shift of the curve meaning a decreased affinity of hemoglobin for O₂ 
B)  a rightward shift of the curve meaning an increased affinity of hemoglobin for O₂ 
C)  a leftward shift of the curve meaning a decreased affinity of hemoglobin for O₂ 
D)  a leftward shift of the curve meaning an increased affinity of hemoglobin for O₂

Question 2

A patient has a reported CaO₂ of 19 vol%,cardiac output of 4.8 L/min,and CvO₂ of 14 vol%.What would the oxygen extraction ratio equal?

Accepted Answer

A)  26.3% 
B)  50% 
C)  74% 
D)  insufficent info provided to calculate 
A)  26.3% 
B)  50% 
C)  74% 
D)  insufficent info provided to calculate

Question 3

How is the majority of CO₂ transported from the tissues to the lungs?

Accepted Answer

A)  bicarbonate 
B)  dissolved in the plasma 
C)  carbamino Hb 
D)  carbamino compounds 
A)  bicarbonate 
B)  dissolved in the plasma 
C)  carbamino Hb 
D)  carbamino compounds

Question 4

Which of the following are ways carbon dioxide is transported in the RBC?
I.Dissolved
II.Bicarbonate
III.Carbamino-Hb

Accepted Answer

A)  I, II, and III 
B)  I and II only 
C)  I only 
D)  II only 
A)  I, II, and III 
B)  I and II only 
C)  I only 
D)  II only

Question 5

Which vessels contribute to normal physiologic shunts?
I.bronchial vein
II.thebesian veins
III.pulmonary capillaries that perfuse underventilated alveoli

Accepted Answer

A)  I, II, III 
B)  I and II only 
C)  I and III only 
D)  III only 
A)  I, II, III 
B)  I and II only 
C)  I and III only 
D)  III only

Question 6

How much oxygen can dissolve in a plasma at body temperature?

Accepted Answer

A)  0.003 mL/dL/mmHg PO₂ 
B)  0.03 mL/dL/mmHg PO₂ 
C)  0.3 mL/dL/mmHg PO₂ 
D)  1.34 mL/dL/mmHg PO₂ 
A)  0.003 mL/dL/mmHg PO₂ 
B)  0.03 mL/dL/mmHg PO₂ 
C)  0.3 mL/dL/mmHg PO₂ 
D)  1.34 mL/dL/mmHg PO₂

Question 7

What is the function of carbonic anhydrase in the RBC?

Accepted Answer

A)  catalyzes the hydrolysis of dissolved CO₂ 
B)  binds to form carbamino compounds 
C)  prevents oxygen from binding with hemoglobin 
D)  enhances the amount of CO₂ that dissolves in the RBC 
A)  catalyzes the hydrolysis of dissolved CO₂ 
B)  binds to form carbamino compounds 
C)  prevents oxygen from binding with hemoglobin 
D)  enhances the amount of CO₂ that dissolves in the RBC

Question 8

In the lungs,what substances does carbonic acid primarily dissociate into for removal?

Accepted Answer

A)  CO₂ and H20 
B)  HCO₃- and H+ 
C)  lactic acid 
D)  carbamino Hb 
A)  CO₂ and H20 
B)  HCO₃- and H+ 
C)  lactic acid 
D)  carbamino Hb

Question 9

Which of the following shunts compose true shunts?

Accepted Answer

A)  anatomic and capillary 
B)  anatomic and relative 
C)  capillary and relative 
D)  anatomic and deadspace 
A)  anatomic and capillary 
B)  anatomic and relative 
C)  capillary and relative 
D)  anatomic and deadspace

Question 10

What quantity of oxygen would be transported if Hb was 12g% and the SaO₂ was 90%?

Accepted Answer

A)  14.47 vol% O₂ 
B)  16.08 vol% O₂ 
C)  19.8 vol% 
D)  16.98 vol% 
A)  14.47 vol% O₂ 
B)  16.08 vol% O₂ 
C)  19.8 vol% 
D)  16.98 vol%

Question 11

What would the DO₂ equal if a patient has a CaO₂ of 18 vol% and a CO of 6 L/min.

Accepted Answer

A)  1080 mL O₂/min 
B)  960 mL O₂/ min 
C)  333 mL O₂/min 
D)  618 mL O₂/min 
A)  1080 mL O₂/min 
B)  960 mL O₂/ min 
C)  333 mL O₂/min 
D)  618 mL O₂/min

Question 12

Which type of hypoxia would be present in carbon monoxide poisoning?

Accepted Answer

A)  anemic 
B)  histotoxic 
C)  circulatory 
D)  hypoxemic 
A)  anemic 
B)  histotoxic 
C)  circulatory 
D)  hypoxemic

Question 13

What value is derived when (CcO?-CaO?) is divided by (CcO?-CvO? )

Accepted Answer

A)  intrapulmonary shunt (QS/QT) 
B)  A-a gradient 
C)  O?ER 
D)  VO? 
A)  intrapulmonary shunt (QS/QT) 
B)  A-a gradient 
C)  O?ER 
D)  VO?

Question 14

From 97% and 90% saturation on the oxyhemoglobin dissociation curve,what change occurs in the PO₂?

Accepted Answer

A)  It falls from 100mm Hg to 60 mm Hg 
B)  It rises from 60 mm Hg to 100 mm Hg 
C)  It rises from 27mm Hg to 40 mm Hg 
D)  It falls from 75mm hg to 60 mm Hg 
A)  It falls from 100mm Hg to 60 mm Hg 
B)  It rises from 60 mm Hg to 100 mm Hg 
C)  It rises from 27mm Hg to 40 mm Hg 
D)  It falls from 75mm hg to 60 mm Hg

Question 15

What is the term for Hb?

Accepted Answer

A)  deoxyhemoglobin 
B)  oxyhemoglobin 
C)  methemoglobin 
D)  carboxyhemoglobin 
A)  deoxyhemoglobin 
B)  oxyhemoglobin 
C)  methemoglobin 
D)  carboxyhemoglobin

Question 16

Which of the following pulmonary shunt values indicates a potentially life-threatening clinical situation?

Accepted Answer

A)  35% 
B)  23% 
C)  17% 
D)  8% 
A)  35% 
B)  23% 
C)  17% 
D)  8%

Question 17

Which type of hypoxia results from an inability of tissue cells to utilize the oxygen delivered to them?

Accepted Answer

A)  histotoxic 
B)  circulatory 
C)  anemic 
D)  hypoxemic 
A)  histotoxic 
B)  circulatory 
C)  anemic 
D)  hypoxemic

Question 18

What is derived when (content of oxygen in arterial blood x 10)is multiplied by cardiac output?

Accepted Answer

A)  total oxygen delivery 
B)  oxygen consumption 
C)  oxygen extraction ratio 
D)  shunt 
A)  total oxygen delivery 
B)  oxygen consumption 
C)  oxygen extraction ratio 
D)  shunt

Question 19

What effect would hyperthermia and shivering have on VO₂ and the O₂ER?

Accepted Answer

A)  Both would increase 
B)  Both would decrease 
C)  VO₂ would increase and O₂ER would decrease 
D)  VO₂ would decrease and O₂ER would increase 
A)  Both would increase 
B)  Both would decrease 
C)  VO₂ would increase and O₂ER would decrease 
D)  VO₂ would decrease and O₂ER would increase

Question 20

Which hormone is used in blood boosting by athletes?

Accepted Answer

A)  EPO 
B)  ACTH 
C)  HCG 
D)  Glucagon 
A)  EPO 
B)  ACTH 
C)  HCG 
D)  Glucagon

What does a P₅₀ of 30 indicate?

A patient has a reported CaO₂ of 19 vol%,cardiac output of 4.8 L/min,and CvO₂ of 14 vol%.What would the oxygen extraction ratio equal?

How is the majority of CO₂ transported from the tissues to the lungs?

Which of the following are ways carbon dioxide is transported in the RBC? I.Dissolved II.Bicarbonate III.Carbamino-Hb

Which vessels contribute to normal physiologic shunts? I.bronchial vein II.thebesian veins III.pulmonary capillaries that perfuse underventilated alveoli

How much oxygen can dissolve in a plasma at body temperature?

What is the function of carbonic anhydrase in the RBC?

In the lungs,what substances does carbonic acid primarily dissociate into for removal?

Which of the following shunts compose true shunts?

What quantity of oxygen would be transported if Hb was 12g% and the SaO₂ was 90%?

What would the DO₂ equal if a patient has a CaO₂ of 18 vol% and a CO of 6 L/min.

Which type of hypoxia would be present in carbon monoxide poisoning?

What value is derived when (CcO?-CaO?) is divided by (CcO?-CvO? )

From 97% and 90% saturation on the oxyhemoglobin dissociation curve,what change occurs in the PO₂?

What is the term for Hb?

Which of the following pulmonary shunt values indicates a potentially life-threatening clinical situation?

Which type of hypoxia results from an inability of tissue cells to utilize the oxygen delivered to them?

What is derived when (content of oxygen in arterial blood x 10)is multiplied by cardiac output?

What effect would hyperthermia and shivering have on VO₂ and the O₂ER?

Which hormone is used in blood boosting by athletes?

The Anatomy and Physiology of the Respiratory System

Ventilation

Pulmonary Function Measurements

The Diffusion of Pulmonary Gases

The Anatomy and Physiology of the Circulatory System

Acid Base Balance

Ventilation Perfusion Relationships

Control of Ventilation

Fetal Development and the Cardiopulmonary System

Aging and the Cardiopulmonary System

Electrophysiology of the Heart

The Standard 12 ECG System

ECG Interpretation

Hemodynamic Measurements

Renal Failure and Its Effects on the Cardiopulmonary System

Sleep Physiology and Its Relationship to the Cardiopulmonary System

Exercise and Its Effects on the Cardiopulmonary System

High Altitude and Its Effects on the Cardiopulmonary System

High Pressure Environments and Their Effects on the Cardiopulmonary System

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Exam 6: Oxygen and Carbon DioxideTransport

What does a P₅₀ of 30 indicate?

A patient has a reported CaO₂ of 19 vol%,cardiac output of 4.8 L/min,and CvO₂ of 14 vol%.What would the oxygen extraction ratio equal?

How is the majority of CO₂ transported from the tissues to the lungs?

Which of the following are ways carbon dioxide is transported in the RBC? I.Dissolved II.Bicarbonate III.Carbamino-Hb

Which vessels contribute to normal physiologic shunts? I.bronchial vein II.thebesian veins III.pulmonary capillaries that perfuse underventilated alveoli

How much oxygen can dissolve in a plasma at body temperature?

What is the function of carbonic anhydrase in the RBC?

In the lungs,what substances does carbonic acid primarily dissociate into for removal?

Which of the following shunts compose true shunts?

What quantity of oxygen would be transported if Hb was 12g% and the SaO₂ was 90%?

What would the DO₂ equal if a patient has a CaO₂ of 18 vol% and a CO of 6 L/min.

Which type of hypoxia would be present in carbon monoxide poisoning?

What value is derived when (CcO?-CaO?) is divided by (CcO?-CvO? )

From 97% and 90% saturation on the oxyhemoglobin dissociation curve,what change occurs in the PO₂?

What is the term for Hb?

Which of the following pulmonary shunt values indicates a potentially life-threatening clinical situation?

Which type of hypoxia results from an inability of tissue cells to utilize the oxygen delivered to them?

What is derived when (content of oxygen in arterial blood x 10)is multiplied by cardiac output?

What effect would hyperthermia and shivering have on VO₂ and the O₂ER?

Which hormone is used in blood boosting by athletes?

The Anatomy and Physiology of the Respiratory System

Ventilation

Pulmonary Function Measurements

The Diffusion of Pulmonary Gases

The Anatomy and Physiology of the Circulatory System

Acid Base Balance

Ventilation Perfusion Relationships

Control of Ventilation

Fetal Development and the Cardiopulmonary System

Aging and the Cardiopulmonary System

Electrophysiology of the Heart

The Standard 12 ECG System

ECG Interpretation

Hemodynamic Measurements

Renal Failure and Its Effects on the Cardiopulmonary System

Sleep Physiology and Its Relationship to the Cardiopulmonary System

Exercise and Its Effects on the Cardiopulmonary System

High Altitude and Its Effects on the Cardiopulmonary System

High Pressure Environments and Their Effects on the Cardiopulmonary System

Filters