Question 1

Most oxygen is carried in the blood ______; but most carbon dioxide is ________.

Accepted Answer

A)  dissolved in plasma; associated with salt or acid
B)  bound to hemoglobin; associated with bicarbonate ions in the plasma
C)  combined with albumin; associated with carbonic acid
D)  bound to hemoglobin; bound to albumin
E)  bound to plasma proteins; carried as carbon dioxideF) B) and C)
G) A) and B)

Question 2

Match the disorder of the respiratory system with the best description.
-decrease in body temperature

Accepted Answer

A)  destruction of the alveolar walls
B)  inflammation of the bronchii
C)  inherited disease that affects secretory cells lining the lungs
D)  replacement of lung tissue with fibrous connective tissue
E)  infant stops breathing during sleepF) D) and E)
G) C) and D)

Question 3

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.F) A) and B)
G) B) and C)

Question 4

When people aspirate liquids or food into their lungs,the liquid or food most commonly enters the right lung rather than the left lung.This is because the right primary bronchus is __________ than the left primary bronchus.

Accepted Answer

A)  longer
B)  thinner
C)  more vertical
D)  less ciliated
E)  shorterF) A) and B)
G) A) and D)

Question 5

Expiration during quiet breathing

Accepted Answer

A)  is an active process.
B)  requires more muscle contractions than inspiration.
C)  is due to contraction of the diaphragm and elevation of the ribs.
D)  occurs when the diaphragm and external intercostal muscles relax.
E)  is not affected by the elastic properties of the lungs.F) C) and E)
G) C) and D)

Question 6

Which of the following structures opens directly into the nasal cavity?

Accepted Answer

A)  paranasal sinuses
B)  auditory tubes
C)  lacrimal glands
D)  fauces
E)  epiglottisF) B) and D)
G) All of the above

Question 7

Arrange the following structures in the order air passes through them during inhalation: (1) alveolar ducts
(2) alveolus
(3) respiratory bronchiole
(4) terminal bronchiole

Accepted Answer

A)  1,2,3,4
B)  2,1,3,4
C)  4,3,1,2
D)  3,2,1,4
E)  4,3,2,1F) A) and B)
G) C) and D)

Question 8

Oxygen and carbon dioxide are exchanged across the respiratory membrane by the process of

Accepted Answer

A)  active transport.
B)  diffusion.
C)  filtration.
D)  osmosis.
E)  cotransport.F) A) and E)
G) C) and D)

Question 9

Match the term with the appropriate description or definition.
-residual 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 volumeF) A) and D)
G) None of the above

Question 10

What is the volume of air that can be forcibly expired after expiration of the tidal volume?

Accepted Answer

A)  residual volume
B)  inspiratory reserve volume
C)  vital capacity
D)  expiratory reserve volumeE) A) and D)
F) None of the above

Question 11

The nasal septum

Accepted Answer

A)  divides the nose into superior and inferior chambers.
B)  forms the floor of the nasal cavity.
C)  is the opening of the nose to the outside environment.
D)  is the part of the nose responsible for the sense of smell.
E)  divides the nose into right and left chambers.F) A) and B)
G) A) and C)

Question 12

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.E) B) and C)
F) A) and C)

Question 13

Each lobe of each lung is supplied by a

Accepted Answer

A)  primary bronchus.
B)  secondary bronchus.
C)  tertiary bronchus.
D)  bronchiole.
E)  segmental bronchus.F) C) and E)
G) B) and C)

Question 14

The ring of cartilage that forms the base of the larynx is the

Accepted Answer

A)  epiglottis.
B)  thyroid cartilage.
C)  cricoid cartilage.
D)  arytenoid cartilage.
E)  cuneiform cartilage.F) A) and E)
G) B) and C)

Question 15

Use the table to determine the best answer.
  
-Which of the patients above might have a depression of the respiratory center due to drugs?

Accepted Answer

The answer of Use the table to determine the best...

Question 16

A baby holding its breath will

Accepted Answer

A)  be termed a "blue baby".
B)  have brain cells damaged because of low blood oxygen levels.
C)  suffer heart damage because of increased pressure in the aorta.
D)  automatically start to breathe when the CO2 levels in the blood reach a high enough value.
E)  automatically start to breathe when oxygen levels decrease slightly.F) A) and B)
G) A) and D)

Question 17

Rhythmicity of breathing involves

Accepted Answer

A)  conscious effort and control.
B)  stimulation of inspiration.Expiration is automatic.
C)  pontine respiratory group as a necessary part.
D)  a set pattern of inspiration - expiration that is always the same.
E)  the pre-Bötzinger complex of the ventral respiratory group.F) All of the above
G) C) and E)

Question 18

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 LawE) A) and B)
F) None of the above

Question 19

Arrange the following in order from highest to lowest PO2. (1) PO2 of pulmonary veins
(2) PO2 of pulmonary artery
(3) PO2 of alveolar air

Accepted Answer

A)  1,2,3
B)  2,1,3
C)  2,3,1
D)  3,1,2
E)  3,2,1F) B) and C)
G) A) and D)

Question 20

The trachea

Accepted Answer

A)  is located in the pleural cavity.
B)  has "C" shaped cartilages that form its anterior and lateral sides.
C)  is lined with keratinized squamous epithelium.
D)  bifurcates to form the bronchioles.
E)  collapses when not in use.F) A) and D)
G) A) and B)

Exam 23: Respiratory System

Each lobe of each lung is supplied by a

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When people aspirate liquids or food into their lungs,the liquid or food most commonly enters the right lung rather than the left lung.This is because the right primary bronchus is __________ than the left primary bronchus.

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A baby holding its breath will

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Which of the following statements regarding the lungs is correct?

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Match the disorder of the respiratory system with the best description. -decrease in body temperature

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The trachea

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Expiration during quiet breathing

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Use the table to determine the best answer. -Which of the patients above might have a depression of the respiratory center due to drugs?

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Rhythmicity of breathing involves

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What is the volume of air that can be forcibly expired after expiration of the tidal volume?

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

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Most oxygen is carried in the blood ______; but most carbon dioxide is ________.

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Which of the following structures opens directly into the nasal cavity?

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Arrange the following in order from highest to lowest PO2. (1) PO2 of pulmonary veins (2) PO2 of pulmonary artery (3) PO2 of alveolar air

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The ring of cartilage that forms the base of the larynx is the

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

Correct AnswerverifiedShow Answer

Oxygen and carbon dioxide are exchanged across the respiratory membrane by the process of

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Arrange the following structures in the order air passes through them during inhalation: (1) alveolar ducts (2) alveolus (3) respiratory bronchiole (4) terminal bronchiole

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The nasal septum

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

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Most oxygen is carried in the blood ; but most carbon dioxide is __.

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Arrange the following in order from highest to lowest PO₂. (1) PO₂ of pulmonary veins (2) PO₂ of pulmonary artery (3) PO₂ of alveolar air

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