Question 1

How long is the average trachea?

Accepted Answer

A)   12-14 inches
B)   12-14 cm
C)   12-14 mmD) A) and B)
E) A) and C)

Question 2

Activation of sympathetic nerves that innervate lung tissue results in

Accepted Answer

A)   bronchoconstriction.
B)   bronchodilation.C) A) and B)
D) undefined

Question 3

Gross & microscopic anatomy of the respiratory tract & related organs. 
-In this view of the larynx, what structure does number 5 indicate?

Accepted Answer

A)   Tracheal cartilage
B)   Thyroid cartilage
C)   Epiglottis
D)   Cricoid cartilage
E)   Corniculate cartilageF) A) and B)
G) B) and E)

Question 4

Prematurely born infants sometimes experience respiratory distress due to inadequate production of surfactant.

Accepted Answer

A) True 
 B)False

Question 5

These muscles increase thoracic cavity dimensions by elevating the first and second ribs during forced inhalation.

Accepted Answer

A)   External intercostals
B)   Scalenes
C)   Transversus thoracis
D)   Internal intercostals
E)   Serratus posterior inferiorF) A) and B)
G) None of the above

Question 6

Foreign particles

Accepted Answer

A)   are more likely to lodge in the right primary bronchus.
B)   are more likely to lodge in the left primary bronchus.
C)   lodge equally often in each of the two primary bronchi.D) A) and B)
E) A) and C)

Question 7

You may have noticed that after a large meal you have had some difficulty breathing. Which explanation is most accurate with regard to this situation?

Accepted Answer

A)   The food presses on the bronchi, making air flow difficult.
B)   The large quantity of food retards pulmonary blood flow.
C)   Oxygen to the lungs is restricted due to fullness in the stomach.
D)   A full stomach impedes contraction of the diaphragm, limiting inhalation.E) A) and D)
F) B) and C)

Question 8

Airflow is ________ related to the pressure gradient and ________ related to resistance.

Accepted Answer

A)   directly; directly
B)   directly; inversely
C)   inversely; inversely
D)   inversely; directlyE) A) and B)
F) A) and C)

Question 9

Compared to its partial pressure at sea level, what would be the partial pressure of oxygen at an altitude with an atmospheric pressure of only 380 mmHg (recall that sea level atmospheric pressure is 760 mmHg) ?

Accepted Answer

A)   Po2 would be half as much as it would be at sea level.
B)   Po2 would be twice as much as it would be at sea level.
C)   Po2 would be one-fourth as much as it would be at sea level.
D)   Po2 would be three-quarters as much as it would be at sea level.E) B) and D)
F) All of the above

Question 10

________ is the amount of air that moves into and out of the lungs with each breath.

Accepted Answer

The answer of ________ is the amount of air that...

Question 11

The expiratory reserve volume plus the residual volume equals the

Accepted Answer

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

Question 12

The percentage of the vital capacity that can be exhaled during a specific time period is known as the

Accepted Answer

A)   tidal volume.
B)   alveolar ventilation.
C)   forced expiratory volume.
D)   maximal lung capacity rate.
E)   pulmonary minute ventilation.F) B) and E)
G) All of the above

Question 13

The amount of air that can be forcibly inhaled after a normal inspiration is the

Accepted Answer

A)   inspiratory reserve volume.
B)   inspiratory capacity.
C)   residual volume.
D)   functional residual capacity.E) A) and C)
F) C) and D)

Question 14

The potential space between the serous membranes surrounding each lung is known as the pleural ________.

Accepted Answer

The answer of The potential space between the serous membranes...

Question 15

Mucous secretions of the respiratory tract include antimicrobial substances such as lysozyme and defensins.

Accepted Answer

A) True 
 B)False

Question 16

As the thoracic cavity (and therefore the lungs) increase in size, the pressure inside increases proportionally.

Accepted Answer

A) True 
 B)False

Question 17

Most carbon dioxide is transported through the blood as bicarbonate dissolved in plasma.

Accepted Answer

A) True 
 B)False

Question 18

The terms "upper respiratory system" and "lower respiratory system" are ________ categorizations of the respiratory system.

Accepted Answer

A)   structural
B)   functional
C)   outdatedD) A) and B)
E) A) and C)

Question 19

The pulmonary plexus is a weblike network of nerve fibers that surrounds the primary bronchi and enters the lungs at the hilum. It consists of both sympathetic and parasympathetic fibers.

Accepted Answer

A) True 
 B)False

Question 20

An increase in the partial pressure of oxygen causes pulmonary arterioles to ________, thereby altering ________ to make gas exchange more efficient.

Accepted Answer

A)   constrict; perfusion
B)   dilate; perfusion
C)   constrict; ventilation
D)   dilate; ventilationE) A) and B)
F) All of the above

Exam 23: Respiratory System

Most carbon dioxide is transported through the blood as bicarbonate dissolved in plasma.

Correct AnswerverifiedShow Answer

Activation of sympathetic nerves that innervate lung tissue results in

Correct AnswerverifiedShow Answer

The expiratory reserve volume plus the residual volume equals the

Correct AnswerverifiedShow Answer

The terms "upper respiratory system" and "lower respiratory system" are ________ categorizations of the respiratory system.

Correct AnswerverifiedShow Answer

Mucous secretions of the respiratory tract include antimicrobial substances such as lysozyme and defensins.

Correct AnswerverifiedShow Answer

Foreign particles

Correct AnswerverifiedShow Answer

________ is the amount of air that moves into and out of the lungs with each breath.

Correct AnswerverifiedShow Answer

Compared to its partial pressure at sea level, what would be the partial pressure of oxygen at an altitude with an atmospheric pressure of only 380 mmHg (recall that sea level atmospheric pressure is 760 mmHg) ?

Correct AnswerverifiedShow Answer

Gross & microscopic anatomy of the respiratory tract & related organs. -In this view of the larynx, what structure does number 5 indicate?

Correct AnswerverifiedShow Answer

These muscles increase thoracic cavity dimensions by elevating the first and second ribs during forced inhalation.

Correct AnswerverifiedShow Answer

Prematurely born infants sometimes experience respiratory distress due to inadequate production of surfactant.

Correct AnswerverifiedShow Answer

An increase in the partial pressure of oxygen causes pulmonary arterioles to ________, thereby altering ________ to make gas exchange more efficient.

Correct AnswerverifiedShow Answer

As the thoracic cavity (and therefore the lungs) increase in size, the pressure inside increases proportionally.

Correct AnswerverifiedShow Answer

The pulmonary plexus is a weblike network of nerve fibers that surrounds the primary bronchi and enters the lungs at the hilum. It consists of both sympathetic and parasympathetic fibers.

Correct AnswerverifiedShow Answer

The amount of air that can be forcibly inhaled after a normal inspiration is the

Correct AnswerverifiedShow Answer

How long is the average trachea?

Correct AnswerverifiedShow Answer

You may have noticed that after a large meal you have had some difficulty breathing. Which explanation is most accurate with regard to this situation?

Correct AnswerverifiedShow Answer

The potential space between the serous membranes surrounding each lung is known as the pleural ________.

Correct AnswerverifiedShow Answer

Airflow is ________ related to the pressure gradient and ________ related to resistance.

Correct AnswerverifiedShow Answer

The percentage of the vital capacity that can be exhaled during a specific time period is known as the

Correct AnswerverifiedShow 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

Correct Answer
verified

An increase in the partial pressure of oxygen causes pulmonary arterioles to , thereby altering to make gas exchange more efficient.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Airflow is related to the pressure gradient and related to resistance.

Correct Answer
verified

Correct Answer
verified