Question 1

Which of the following is an appropriate response to carbon monoxide (CO) poisoning?

Accepted Answer

A)  hyperventilation to exhale CO from the body
B)  hyperbaric oxygen chamber to increase PO2 and clear CO from the body
C)  slow breathing into a paper bag
D)  immediate application of bicarbonate ions to facilitate removal of CO from Hb

Question 2

Which of the following is correct regarding acclimatization?

Accepted Answer

A)  At high altitudes,hemoglobin's affinity for O2 is increased because BPG concentrations increase.
B)  High-altitude conditions always result in lower-than-normal hemoglobin saturation levels because less O2 is available to be loaded.
C)  Decreases in arterial PO2 cause the peripheral chemoreceptors to become less responsive to increases in PCO2.
D)  When blood O2 levels decline,the kidneys produce more erythropoietin,which stimulates breakdown of red blood cells in the spleen.

Question 3

The lungs are perfused by two circulations: the pulmonary and the bronchial.The pulmonary circulation is for oxygenation of blood.The bronchial circulation supplies blood to the lung structures (tissue).

Accepted Answer

A) True 
 B)False

Question 4

Briefly differentiate between atmospheric pressure,intrapulmonary pressure,and intrapleural pressure.Which of these is always negative in a healthy individual during normal breathing? What happens if intrapleural pressure becomes equal to atmospheric pressure?

Accepted Answer

Atmospheric pressure is the pressure exe...

Question 5

The larynx contains ________.

Accepted Answer

A)  lateral cartilage ridges called false vocal folds
B)  the thyroid cartilage
C)  an upper pair of avascular mucosal folds called true vocal folds
D)  a cricoid cartilage also called the Adam's apple

Question 6

Atelectasis (lung collapse)renders the lung useless for ventilation.

Accepted Answer

A) True 
 B)False

Question 7

Surfactant helps to prevent the alveoli from collapsing by ________.

Accepted Answer

A)  humidifying the air before it enters
B)  protecting the surface of alveoli from dehydration and other environmental variations
C)  warming the air before it enters
D)  interfering with the cohesiveness of water molecules,thereby reducing the surface tension of alveolar fluid

Question 8

With the Bohr effect,more oxygen is released because a(n) ________.

Accepted Answer

A)  decrease in pH (acidosis) weakens the hemoglobin-oxygen bond
B)  increase in pH (alkalosis) strengthens the hemoglobin-oxygen bond
C)  decrease in pH (acidosis) strengthens the hemoglobin-oxygen bond
D)  increase in pH (alkalosis) weakens the hemoglobin-oxygen bond

Question 9

Distinguish among anemic,ischemic (stagnant),histotoxic,and hypoxemic hypoxia.

Accepted Answer

Anemic hypoxia reflects poor oxygen delivery resulting from too few RBCs or RBCs that contain abnormal or too little Hb.Ischemic (stagnant)hypoxia results when blood circulation is impaired or blocked.Histotoxic hypoxia occurs when body cells are unable to use O2 even though adequate amounts are delivered.Hypoxemia hypoxia is indicated by reduced arterial PO2.

Question 10

The alveolar ventilation rate is the best index of effective ventilation.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is true regarding normal quiet expiration of air?

Accepted Answer

A)  It depends on the complete lack of surface tension on the alveolar wall.
B)  It is a passive process that depends on the recoil of elastic fibers that were stretched during inspiration.
C)  It requires contraction of abdominal wall muscles.
D)  It is driven by increased blood CO2 levels.

Question 12

In the plasma,the quantity of oxygen in solution is ________.

Accepted Answer

A)  only about 1.5% of the oxygen carried in blood
B)  not present except where it is combined with carrier molecules
C)  about equal to the oxygen combined with hemoglobin
D)  greater than the oxygen combined with hemoglobin

Question 13

Labored breathing is termed dyspnea.

Accepted Answer

A) True 
 B)False

Question 14

Spirometry results reveal a vital capacity of two liters which is well below the predicted value of five liters.This suggests which disorder?

Accepted Answer

A)  emphysema
B)  asthma
C)  restrictive disease
D)  obstructive pulmonary disease

Question 15

Changes in arterial pH can modify respiration rate and rhythm even when carbon dioxide and oxygen levels are normal.

Accepted Answer

A) True 
 B)False  True

Question 16

How will the lungs compensate for an acute rise in the partial pressure of CO2 in arterial blood?

Accepted Answer

Respirator...

Question 17

Which of the following does NOT influence hemoglobin saturation?

Accepted Answer

A)  BPG
B)  nitric oxide
C)  temperature
D)  partial pressure of carbon dioxide

Question 18

While dining out in a restaurant a man suddenly chokes on a piece of meat.The waitress is also a student nurse and comes to the man's aid.She asks him if he can talk.The man responds by shaking his head no and grabbing at his neck.What is the significance of the man's inability to talk?

Accepted Answer

Speech involves the intermittent release...

Question 19

The olfactory mucosal lining of the nasal cavity contains the receptors for the sense of smell.

Accepted Answer

A) True 
 B)False  True

Question 20

Which of the following determines lung compliance?

Accepted Answer

A)  muscles of inspiration
B)  alveolar surface tension
C)  airway opening
D)  flexibility of the thoracic cage

Exam 22: The Respiratory System

Which of the following is an appropriate response to carbon monoxide (CO) poisoning?

Correct Answer
verified

Which of the following is correct regarding acclimatization?

Correct Answer
verified

The lungs are perfused by two circulations: the pulmonary and the bronchial.The pulmonary circulation is for oxygenation of blood.The bronchial circulation supplies blood to the lung structures (tissue).

Correct Answer
verified

Briefly differentiate between atmospheric pressure,intrapulmonary pressure,and intrapleural pressure.Which of these is always negative in a healthy individual during normal breathing? What happens if intrapleural pressure becomes equal to atmospheric pressure?

Correct Answer
verified
Atmospheric pressure is the pressure exe...
View Answer

The larynx contains ________.

Correct Answer
verified

Atelectasis (lung collapse)renders the lung useless for ventilation.

Correct Answer
verified

Surfactant helps to prevent the alveoli from collapsing by ________.

Correct Answer
verified

With the Bohr effect,more oxygen is released because a(n) ________.

Correct Answer
verified

Distinguish among anemic,ischemic (stagnant),histotoxic,and hypoxemic hypoxia.

The alveolar ventilation rate is the best index of effective ventilation.

Correct Answer
verified

Which of the following is true regarding normal quiet expiration of air?

Correct Answer
verified

In the plasma,the quantity of oxygen in solution is ________.

Correct Answer
verified

Labored breathing is termed dyspnea.

Correct Answer
verified

Spirometry results reveal a vital capacity of two liters which is well below the predicted value of five liters.This suggests which disorder?

Correct Answer
verified

Changes in arterial pH can modify respiration rate and rhythm even when carbon dioxide and oxygen levels are normal.

Correct Answer
verified
True

How will the lungs compensate for an acute rise in the partial pressure of CO2 in arterial blood?

Correct Answer
verified
Respirator...
View Answer

Which of the following does NOT influence hemoglobin saturation?

Correct Answer
verified

While dining out in a restaurant a man suddenly chokes on a piece of meat.The waitress is also a student nurse and comes to the man's aid.She asks him if he can talk.The man responds by shaking his head no and grabbing at his neck.What is the significance of the man's inability to talk?

Correct Answer
verified
Speech involves the intermittent release...
View Answer

The olfactory mucosal lining of the nasal cavity contains the receptors for the sense of smell.

Correct Answer
verified
True

Which of the following determines lung compliance?

Correct Answer
verified

Exam 22: The Respiratory System

Which of the following is an appropriate response to carbon monoxide (CO) poisoning?

Correct AnswerverifiedShow Answer

Which of the following is correct regarding acclimatization?

Correct AnswerverifiedShow Answer

The lungs are perfused by two circulations: the pulmonary and the bronchial.The pulmonary circulation is for oxygenation of blood.The bronchial circulation supplies blood to the lung structures (tissue).

Correct AnswerverifiedShow Answer

Briefly differentiate between atmospheric pressure,intrapulmonary pressure,and intrapleural pressure.Which of these is always negative in a healthy individual during normal breathing? What happens if intrapleural pressure becomes equal to atmospheric pressure?

Correct AnswerverifiedAtmospheric pressure is the pressure exe...View AnswerShow Answer

The larynx contains ________.

Correct AnswerverifiedShow Answer

Atelectasis (lung collapse)renders the lung useless for ventilation.

Correct AnswerverifiedShow Answer

Surfactant helps to prevent the alveoli from collapsing by ________.

Correct AnswerverifiedShow Answer

With the Bohr effect,more oxygen is released because a(n) ________.

Correct AnswerverifiedShow Answer

Distinguish among anemic,ischemic (stagnant),histotoxic,and hypoxemic hypoxia.

The alveolar ventilation rate is the best index of effective ventilation.

Correct AnswerverifiedShow Answer

Which of the following is true regarding normal quiet expiration of air?

Correct AnswerverifiedShow Answer

In the plasma,the quantity of oxygen in solution is ________.

Correct AnswerverifiedShow Answer

Labored breathing is termed dyspnea.

Correct AnswerverifiedShow Answer

Spirometry results reveal a vital capacity of two liters which is well below the predicted value of five liters.This suggests which disorder?

Correct AnswerverifiedShow Answer

Changes in arterial pH can modify respiration rate and rhythm even when carbon dioxide and oxygen levels are normal.

Correct AnswerverifiedTrue

How will the lungs compensate for an acute rise in the partial pressure of CO2 in arterial blood?

Correct AnswerverifiedRespirator...View AnswerShow Answer

Which of the following does NOT influence hemoglobin saturation?

Correct AnswerverifiedShow Answer

While dining out in a restaurant a man suddenly chokes on a piece of meat.The waitress is also a student nurse and comes to the man's aid.She asks him if he can talk.The man responds by shaking his head no and grabbing at his neck.What is the significance of the man's inability to talk?

Correct AnswerverifiedSpeech involves the intermittent release...View AnswerShow Answer

The olfactory mucosal lining of the nasal cavity contains the receptors for the sense of smell.

Correct AnswerverifiedTrue

Which of the following determines lung compliance?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Atmospheric pressure is the pressure exe...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified
Respirator...
View Answer

Correct Answer
verified

Correct Answer
verified
Speech involves the intermittent release...
View Answer

Correct Answer
verified
True

Correct Answer
verified