Question 1

The amount of oxygen released from oxyhemoglobin increases when

Accepted Answer

A)  carbon dioxide concentration decreases.
B)  carbon dioxide concentration increases.
C)  temperature decreases.
D)  blood becomes more alkaline.E) A) and B)
F) A) and C)

Question 2

Changes in the respiratory system that accompany aging include

Accepted Answer

A)  thinning mucus.
B)  thickening of the alveolar walls.
C)  overactive cilia, causing frequent coughing.
D)  slowed swallowing reflex.E) All of the above
F) A) and B)

Question 3

The ventral part of the medulla oblongata near the origin of the vagus nerve is the location of

Accepted Answer

A)  baroreceptors.
B)  mechanoreceptors.
C)  central chemoreceptors.
D)  peripheral chemoreceptors.E) B) and C)
F) A) and D)

Question 4

The volume of air that enters (or leaves) during a single respiratory cycle is the

Accepted Answer

A)  inspiratory reserve volume.
B)  vital capacity.
C)  tidal volume.
D)  expiratory reserve volume.E) C) and D)
F) A) and B)

Question 5

The first event in expiration is

Accepted Answer

A)  inter-alveolar pressure increases.
B)  elastic tissues of the lungs, thoracic cage, and abdominal organs recoil.
C)  air is squeezed out of the lungs.
D)  the diaphragm and external intercostal respiratory muscles relax.E) A) and D)
F) A) and C)

Question 6

Carbon dioxide is sometimes added to the air that a patient breathes in order to

Accepted Answer

A)  increase the rate and decrease the depth of breathing.
B)  increase the rate and depth of breathing.
C)  decrease the rate and increase the depth of breathing.
D)  decrease the rate and depth of breathing.E) B) and C)
F) All of the above

Question 7

Respiration is

Accepted Answer

A)  breathing.
B)  making ATP.
C)  the entire process of gas exchange between the atmosphere and cells.
D)  circulating blood to tissues.E) None of the above
F) A) and C)

Question 8

The respiratory membrane consists of

Accepted Answer

A)  a single thickness of epithelial cells.
B)  a single thickness of epithelial cells and a basement membrane.
C)  two thicknesses of epithelial cells.
D)  two thicknesses of epithelial cells and basement membranes.E) All of the above
F) C) and D)

Question 9

The pharynx functions as a ________, whereas the larynx functions as a ________.

Accepted Answer

A)  common passage for air and food; passageway for food only
B)  passageway for air only; passageway for air and food
C)  common passageway for air and food; passageway for air only
D)  passageway for food only, passageway for air and foodE) None of the above
F) A) and C)

Question 10

The vocal cords are in the

Accepted Answer

A)  pharynx.
B)  larynx.
C)  trachea.
D)  oral cavity.E) A) and D)
F) A) and B)

Question 11

When carbon dioxide bonds to hemoglobin, the compound ________ forms.

Accepted Answer

The answer of When carbon dioxide bonds to hemoglobin, the...

Question 12

A sudden inspiration caused by a spasmodic contraction of the diaphragm while the glottis is closed is a

Accepted Answer

A)  yawn.
B)  laugh.
C)  sneeze.
D)  hiccup.E) A) and C)
F) C) and D)

Question 13

Which of the following factors does not directly affect breathing rate?

Accepted Answer

A)  Partial pressure of oxygen in body fluids
B)  Partial pressure of carbon dioxide in body fluids
C)  Degree of lung tissue stretch
D)  Size of residual volumeE) A) and C)
F) B) and C)

Question 14

Arielle is an 8-year-old with cystic fibrosis. For 30 minutes each morning and evening, a parent holds her body in various positions and massages and kneads the areas over her lungs to dislodge the abundant, sticky mucus, which Arielle spits into a jar. She also takes medication that thins the mucus. If she didn't take these measures, the mucus in her lungs would most likely increase her risk of

Accepted Answer

A)  cancer.
B)  emphysema.
C)  infection.
D)  asthma.E) C) and D)
F) B) and D)

Question 15

The pectoralis minor muscles and the sternocleidomastoid muscles are useful in aiding forced expiration.

Accepted Answer

A) True 
 B)False

Question 16

Police stop a very drunk Richard for driving erratically at 3 AM and give him a breathalyzer test, which he fails miserably. Why does he fail so badly?

Accepted Answer

A)  The thinness of his respiratory membranes allows volatile alcohol molecules to enter the alveoli and become detectable by the machine.
B)  The thickness of his respiratory membranes prevent alcohol from evaporating out of his blood.
C)  His alveoli are in excellent condition.
D)  Excess surfactant has been secreted in response to alcohol.E) A) and C)
F) B) and C)

Question 17

Which statement describes the trachea?

Accepted Answer

A)  It is lined with simple squamous epithelium.
B)  It is comprised of 20 C-shaped cartilage rings.
C)  It is a passageway for food and for air.
D)  It contains no air-filtering mechanisms.E) None of the above
F) A) and B)

Question 18

In October 2001 at the site of the World Trade Center in New York City, fires were still burning from the terrorist attacks that had brought down the buildings. The greatest danger to the respiratory system was

Accepted Answer

A)  the odor.
B)  very small particles of debris.
C)  very large particles of debris.
D)  falling material from damaged buildings.E) B) and C)
F) A) and B)

Question 19

A sudden contraction of the diaphragm while the glottis is closed produces a sneeze.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following has an effect on the pH of blood?

Accepted Answer

A)  Oxygen
B)  Phosphate
C)  Carbon dioxide
D)  NitrogenE) All of the above
F) C) and D)

Exam 19: Respiratory System

The amount of oxygen released from oxyhemoglobin increases when

Correct Answer
verified

A sudden contraction of the diaphragm while the glottis is closed produces a sneeze.

Correct Answer
verified

Correct Answer
verified

Changes in the respiratory system that accompany aging include

Correct Answer
verified

In October 2001 at the site of the World Trade Center in New York City, fires were still burning from the terrorist attacks that had brought down the buildings. The greatest danger to the respiratory system was

Correct Answer
verified

The first event in expiration is

Correct Answer
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Which of the following factors does not directly affect breathing rate?

Correct Answer
verified

The pectoralis minor muscles and the sternocleidomastoid muscles are useful in aiding forced expiration.

Correct Answer
verified

The respiratory membrane consists of

Correct Answer
verified

The volume of air that enters (or leaves) during a single respiratory cycle is the

Correct Answer
verified

A sudden inspiration caused by a spasmodic contraction of the diaphragm while the glottis is closed is a

Correct Answer
verified

Police stop a very drunk Richard for driving erratically at 3 AM and give him a breathalyzer test, which he fails miserably. Why does he fail so badly?

Correct Answer
verified

Which statement describes the trachea?

Correct Answer
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Respiration is

Correct Answer
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The ventral part of the medulla oblongata near the origin of the vagus nerve is the location of

Correct Answer
verified

Carbon dioxide is sometimes added to the air that a patient breathes in order to

Correct Answer
verified

The pharynx functions as a , whereas the larynx functions as a .

Correct Answer
verified

When carbon dioxide bonds to hemoglobin, the compound ________ forms.

Correct Answer
verified

Which of the following has an effect on the pH of blood?

Correct Answer
verified

The vocal cords are in the

Correct Answer
verified

Exam 19: Respiratory System

The amount of oxygen released from oxyhemoglobin increases when

Correct AnswerverifiedShow Answer

A sudden contraction of the diaphragm while the glottis is closed produces a sneeze.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Changes in the respiratory system that accompany aging include

Correct AnswerverifiedShow Answer

In October 2001 at the site of the World Trade Center in New York City, fires were still burning from the terrorist attacks that had brought down the buildings. The greatest danger to the respiratory system was

Correct AnswerverifiedShow Answer

The first event in expiration is

Correct AnswerverifiedShow Answer

Which of the following factors does not directly affect breathing rate?

Correct AnswerverifiedShow Answer

The pectoralis minor muscles and the sternocleidomastoid muscles are useful in aiding forced expiration.

Correct AnswerverifiedShow Answer

The respiratory membrane consists of

Correct AnswerverifiedShow Answer

The volume of air that enters (or leaves) during a single respiratory cycle is the

Correct AnswerverifiedShow Answer

A sudden inspiration caused by a spasmodic contraction of the diaphragm while the glottis is closed is a

Correct AnswerverifiedShow Answer

Police stop a very drunk Richard for driving erratically at 3 AM and give him a breathalyzer test, which he fails miserably. Why does he fail so badly?

Correct AnswerverifiedShow Answer

Which statement describes the trachea?

Correct AnswerverifiedShow Answer

Respiration is

Correct AnswerverifiedShow Answer

The ventral part of the medulla oblongata near the origin of the vagus nerve is the location of

Correct AnswerverifiedShow Answer

Carbon dioxide is sometimes added to the air that a patient breathes in order to

Correct AnswerverifiedShow Answer

The pharynx functions as a ________, whereas the larynx functions as a ________.

Correct AnswerverifiedShow Answer

When carbon dioxide bonds to hemoglobin, the compound ________ forms.

Correct AnswerverifiedShow Answer

Which of the following has an effect on the pH of blood?

Correct AnswerverifiedShow Answer

The vocal cords are in the

Correct AnswerverifiedShow Answer

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The pharynx functions as a , whereas the larynx functions as a .

Correct Answer
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