Question 1

Which of the following molecules acts as a buffer during the chloride shift?

Accepted Answer

A)  carbon dioxide 
B)  hemoglobin 
C)  carbonic anhydrase 
D)  water 
E)  bicarbonate ion 
A)  carbon dioxide 
B)  hemoglobin 
C)  carbonic anhydrase 
D)  water 
E)  bicarbonate ion

Question 2

Whose law explains why a gas will move from one area to another area?

Accepted Answer

A)  Dalton's Law 
B)  Henry's Law 
C)  Charles Law 
D)  Boyle's Law 
A)  Dalton's Law 
B)  Henry's Law 
C)  Charles Law 
D)  Boyle's Law

Question 3

The pontine respiratory neurons

Accepted Answer

A)  are located in the medulla oblongata in the brain. 
B)  are active only during inspiration. 
C)  are active only during expiration. 
D)  play a role in switching between inspiration and expiration. 
E)  is essential for respiratory rhythm. 
A)  are located in the medulla oblongata in the brain. 
B)  are active only during inspiration. 
C)  are active only during expiration. 
D)  play a role in switching between inspiration and expiration. 
E)  is essential for respiratory rhythm.

Question 4

Whenever people cry, their nose runs. This is because the _____ drain tears into the nose.

Accepted Answer

A)  nasolacrimal ducts 
B)  paranasal sinuses 
C)  lacrimal glands 
D)  Wharten's ducts 
E)  auditory tube 
A)  nasolacrimal ducts 
B)  paranasal sinuses 
C)  lacrimal glands 
D)  Wharten's ducts 
E)  auditory tube

Question 5

Which of the following is NOT a function of the respiratory system?

Accepted Answer

A)  olfaction 
B)  taste 
C)  production of chemical mediators 
D)  voice production 
E)  regulation of blood pH 
A)  olfaction 
B)  taste 
C)  production of chemical mediators 
D)  voice production 
E)  regulation of blood pH

Question 6

What is the function of the nasal conchae?

Accepted Answer

A)  increases turbulence in the airflow 
B)  olfaction 
C)  increases surface area for cleaning, warming, and moisturizing the air 
D)  increases turbulence and surface area for cleaning, warming and moisturizing the air 
A)  increases turbulence in the airflow 
B)  olfaction 
C)  increases surface area for cleaning, warming, and moisturizing the air 
D)  increases turbulence and surface area for cleaning, warming and moisturizing the air

Question 7

Which of the following is a passageway for both air and food?

Accepted Answer

A)  trachea 
B)  larynx 
C)  pharynx 
D)  bronchus 
E)  esophagus 
A)  trachea 
B)  larynx 
C)  pharynx 
D)  bronchus 
E)  esophagus

Question 8

When these ligaments or folds come together, they prevent food from entering the lower respiratory tract.

Accepted Answer

A)  vocal folds 
B)  vestibular folds 
C)  cricothyroid ligaments 
D)  epiglottic folds 
E)  vocal folds and vestibular folds 
A)  vocal folds 
B)  vestibular folds 
C)  cricothyroid ligaments 
D)  epiglottic folds 
E)  vocal folds and vestibular folds

Question 9

-Which of the patients above has a severe case of "test anxiety"?

Accepted Answer

The answer of  
-Which of the patients above has...

Question 10

-What does "E" represent on the diagram?

Accepted Answer

A)  larynx 
B)  lungs 
C)  trachea 
D)  pharynx 
E)  bronchi 
A)  larynx 
B)  lungs 
C)  trachea 
D)  pharynx 
E)  bronchi

Question 11

The chemosensitive area of the brain is located in the

Accepted Answer

A)  pons. 
B)  cerebral peduncles. 
C)  cerebellum. 
D)  hypothalamus. 
E)  medulla oblongata. 
A)  pons. 
B)  cerebral peduncles. 
C)  cerebellum. 
D)  hypothalamus. 
E)  medulla oblongata.

Question 12

-What does "B" represent on the diagram?

Accepted Answer

A)  larynx 
B)  lungs 
C)  trachea 
D)  pharynx 
E)  bronchi 
A)  larynx 
B)  lungs 
C)  trachea 
D)  pharynx 
E)  bronchi

Question 13

-What does "A" represent on the diagram?

Accepted Answer

A)  larynx 
B)  lungs 
C)  trachea 
D)  pharynx 
E)  bronchi 
A)  larynx 
B)  lungs 
C)  trachea 
D)  pharynx 
E)  bronchi

Question 14

Match the term with the appropriate description or definition.
-tidal volume
"Enter the letter of the correct description below"

Accepted Answer

A) sum of the inspiratory reserve, expiratory reserve, tidal, and residual volumes 
B) volume of air inspired during a normal inspiration 
C) volume of air remaining in lungs after the most forceful expiration 
D) sum of the expiratory reserve, inspiratory reserve, and tidal volumes 
E) the amount of air that can be forcefully expired after expiration of the normal tidal volume 
A) sum of the inspiratory reserve, expiratory reserve, tidal, and residual volumes 
B) volume of air inspired during a normal inspiration 
C) volume of air remaining in lungs after the most forceful expiration 
D) sum of the expiratory reserve, inspiratory reserve, and tidal volumes 
E) the amount of air that can be forcefully expired after expiration of the normal tidal volume

Question 15

Which of the following statements regarding the lungs is correct?

Accepted Answer

A)  The left lung is larger than the right lung. 
B)  The left lung contains two lobes while the right lung contains three lobes. 
C)  The left lung has more bronchopulmonary segments than the right lung. 
D)  Only the right lung has a hilum. 
E)  The left lung contains three lobes while the right lung contains two lobes. 
A)  The left lung is larger than the right lung. 
B)  The left lung contains two lobes while the right lung contains three lobes. 
C)  The left lung has more bronchopulmonary segments than the right lung. 
D)  Only the right lung has a hilum. 
E)  The left lung contains three lobes while the right lung contains two lobes.

Question 16

Oxygen diffusion from the alveolus to the pulmonary capillary occurs because

Accepted Answer

A)  alveolar PO2 is greater than capillary PO2. 
B)  oxygen diffuses faster than carbon dioxide. 
C)  alveolar PCO2 is greater than capillary PCO2. 
D)  alveolar PO2 is less than capillary PCO2. 
E)  carbon dioxide diffuses faster than oxygen. 
A)  alveolar PO2 is greater than capillary PO2. 
B)  oxygen diffuses faster than carbon dioxide. 
C)  alveolar PCO2 is greater than capillary PCO2. 
D)  alveolar PO2 is less than capillary PCO2. 
E)  carbon dioxide diffuses faster than oxygen.

Question 17

The highest level of exercise that can be performed without causing a significant change in blood pH is called the

Accepted Answer

A)  Hering-Breuer reflex. 
B)  aerobic threshold. 
C)  anaerobic threshold. 
D)  lactic acid tolerance level. 
A)  Hering-Breuer reflex. 
B)  aerobic threshold. 
C)  anaerobic threshold. 
D)  lactic acid tolerance level.

Question 18

Why is fetal hemoglobin very efficient at picking up oxygen?

Accepted Answer

A)  The BPG levels are much higher than in maternal hemoglobin. 
B)  The fetal oxygen-dissociation curve is to the right of the maternal oxygen-dissociation curve. 
C)  The concentration of fetal hemoglobin is 10% greater than the concentration of maternal hemoglobin. 
D)  The fetal oxygen-dissociation curve is to the left of the maternal oxygen-dissociation curve. 
A)  The BPG levels are much higher than in maternal hemoglobin. 
B)  The fetal oxygen-dissociation curve is to the right of the maternal oxygen-dissociation curve. 
C)  The concentration of fetal hemoglobin is 10% greater than the concentration of maternal hemoglobin. 
D)  The fetal oxygen-dissociation curve is to the left of the maternal oxygen-dissociation curve.

Question 19

Gas exchange between the air and the blood takes place in the __________.

Accepted Answer

The answer of Gas exchange between the air and the...

Question 20

During inspiration, contraction of the diaphragm causes the volume of Mr. Jones' thoracic cavity to increase and the pleural pressure to decrease. The pressure in his alveoli (Palv) will

Accepted Answer

A)  decrease below atmospheric pressure (P
B) , causing air to move out of his lungs. 
B)  become greater than atmospheric pressure (P
B) , causing air to move into his lungs. 
C)  decrease below atmospheric pressure (P
B) , causing air to move into his lungs. 
D)  become greater than atmospheric pressure (P
B) , causing air to move out of his lungs. 
E)  does not change. 
A)  decrease below atmospheric pressure (P
B) , causing air to move out of his lungs. 
B)  become greater than atmospheric pressure (P
B) , causing air to move into his lungs. 
C)  decrease below atmospheric pressure (P
B) , causing air to move into his lungs. 
D)  become greater than atmospheric pressure (P
B) , causing air to move out of his lungs. 
E)  does not change.

Exam 23: Respiratory System

Which of the following molecules acts as a buffer during the chloride shift?

Whose law explains why a gas will move from one area to another area?

The pontine respiratory neurons

Whenever people cry, their nose runs. This is because the _____ drain tears into the nose.

Which of the following is NOT a function of the respiratory system?

What is the function of the nasal conchae?

Which of the following is a passageway for both air and food?

When these ligaments or folds come together, they prevent food from entering the lower respiratory tract.

-Which of the patients above has a severe case of "test anxiety"?

-What does "E" represent on the diagram?

The chemosensitive area of the brain is located in the

-What does "B" represent on the diagram?

-What does "A" represent on the diagram?

Match the term with the appropriate description or definition. -tidal volume "Enter the letter of the correct description below"

Which of the following statements regarding the lungs is correct?

Oxygen diffusion from the alveolus to the pulmonary capillary occurs because

The highest level of exercise that can be performed without causing a significant change in blood pH is called the

Why is fetal hemoglobin very efficient at picking up oxygen?

Gas exchange between the air and the blood takes place in the __________.

During inspiration, contraction of the diaphragm causes the volume of Mr. Jones' thoracic cavity to increase and the pleural pressure to decrease. The pressure in his alveoli (Palv) will

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During inspiration, contraction of the diaphragm causes the volume of Mr. Jones' thoracic cavity to increase and the pleural pressure to decrease. The pressure in his alveoli (P_alv) will