Question 1

The inspiratory and expiratory centers are located in the

Accepted Answer

A)   medulla.
B)   pons.
C)   cerebellum.
D)   diaphragm.E) B) and C)
F) None of the above

Question 2

The serous membrane covering the surface of the lungs is called the ____________________.

Accepted Answer

The answer of The serous membrane covering the surface of...

Question 3

What is the purpose of surfactant?

Accepted Answer

A)   To reduce friction between the pleural membranes during inspiration and expiration
B)   To provide a medium in which gas can dissolve
C)   To gather any dust particles that have entered the lungs in inspired air
D)   To reduce surface tension to keep the alveolus from collapsing during respirationE) C) and D)
F) All of the above

Question 4

You notice that a patient's sternocleidomastoid and scalene muscles are contracting with respiration.What should you conclude based on this observance?

Accepted Answer

A)   The patient is breathing normally,using the normal muscles of inspiration and expiration.
B)   The patient is using his accessory muscles to exhale.
C)   The patient is using his accessory muscles to inhale.
D)   The patient is using the Hering-Breuer reflex to prevent lung overinflation.E) None of the above
F) B) and C)

Question 5

Which region of the pharynx contains openings for the eustachian tubes?

Accepted Answer

A)   Oropharynx
B)   Laryngopharynx
C)   Nasopharynx
D)   The eustachian tubes do not open into the pharynxE) A) and B)
F) C) and D)

Question 6

How is most of the carbon dioxide in the body transported?

Accepted Answer

A)   Dissolved in plasma
B)   Bound to hemoglobin to form carbaminohemoglobin
C)   Carried in the form of bicarbonate ions
D)   In the form of carbonic acidE) None of the above
F) A) and B)

Question 7

Which region of the pharynx contains the tonsils?

Accepted Answer

A)   Oropharynx
B)   Laryngopharynx
C)   Nasopharynx
D)   The tonsils are not found in the pharynxE) A) and B)
F) A) and C) A

Question 8

The alveoli contain small amounts of fluid to

Accepted Answer

A)   prevent friction during respiration.
B)   permit gas exchange.
C)   decrease surface tension.
D)   ease the movement of the alveoli against surrounding tissues.E) None of the above
F) C) and D)

Question 9

What function do the vestibular folds of the larynx serve?

Accepted Answer

A)   Produce sound
B)   Prevent food from entering the airway
C)   Remove dust from inspired air
D)   Anchor the larynx to the epiglottisE) A) and D)
F) A) and C) B

Question 10

A piece of cartilage called the ____________________ closes over the top of the larynx during swallowing to direct food and liquids into the esophagus.

Accepted Answer

The answer of A piece of cartilage called the ____________________...

Question 11

Air is warmed and moistened in the

Accepted Answer

A)   trachea.
B)   bronchi.
C)   larynx.
D)   nasal cavity.E) A) and D)
F) A) and B) D

Question 12

The opening between the vocal cords is called the ____________________.

Accepted Answer

The answer of The opening between the vocal cords is...

Question 13

Which factor is key in allowing the body to absorb oxygen and expel carbon dioxide?

Accepted Answer

A)   Variations in the pressures of the gases
B)   Variations in the volume of the gases
C)   Variations in vital capacity
D)   Variations in tidal volumeE) B) and D)
F) C) and D)

Question 14

The principle that states that at a constant temperature,a given volume of gas will exert more pressure in a smaller space than it will in a larger space is known as ____________________.

Accepted Answer

The answer of The principle that states that at a...

Question 15

Based on your knowledge of the anatomy of the lower respiratory tract,where is the most likely location for an aspirated (inhaled) piece of food to lodge and why?

Accepted Answer

A)   The alveoli,because they reside at the terminal end of the bronchioles
B)   The tertiary bronchioles,because they are less than 1 mm wide
C)   The right bronchus,because it is slightly wider and more vertical than the left bronchus
D)   The carina,because it is situated at the end of the tracheaE) B) and C)
F) A) and D)

Question 16

What is the respiratory membrane and what is its role in ventilation?

Accepted Answer

A)   It lines the nasal cavity,where it serves to warm and moisten inspired air.
B)   It lines the bronchial tree,where it secretes a layer of protective mucus,which serves to purify air entering the respiratory tract.
C)   It consists of the alveolar epithelium,the capillary endothelium and their joined basement membranes; it provides the surface through which gas exchange occurs.
D)   It lines the thoracic cavity,where it aids in lung expansion.E) B) and D)
F) C) and D)

Question 17

Which of the following statements is true?

Accepted Answer

A)   Intrapleural pressure is always greater than intrapulmonic pressure.
B)   Intrapleural pressure is always less than atmospheric pressure.
C)   Intrapulmonic pressure is always greater than atmospheric pressure.
D)   Intrapulmonic pressure is always less than atmospheric pressure.E) A) and B)
F) A) and C)

Question 18

Which substance normally exists in the pleural cavity?

Accepted Answer

A)   Blood
B)   Fluid
C)   Mucus
D)   AirE) C) and D)
F) None of the above

Question 19

If someone experiences a loss of intrapleural pressure,what will occur?

Accepted Answer

A)   Breathing will stop.
B)   Sudden exhalation will occur.
C)   Sudden inhalation will occur.
D)   The lung will collapse.E) A) and B)
F) None of the above

Question 20

The amount of air inhaled and exhaled during quiet breathing is known as

Accepted Answer

A)   residual volume.
B)   tidal volume.
C)   vital capacity.
D)   total lung capacity.E) A) and B)
F) C) and D)

Exam 17: Respiratory System

The inspiratory and expiratory centers are located in the

Correct AnswerverifiedShow Answer

The serous membrane covering the surface of the lungs is called the ____________________.

Correct AnswerverifiedShow Answer

What is the purpose of surfactant?

Correct AnswerverifiedShow Answer

You notice that a patient's sternocleidomastoid and scalene muscles are contracting with respiration.What should you conclude based on this observance?

Correct AnswerverifiedShow Answer

Which region of the pharynx contains openings for the eustachian tubes?

Correct AnswerverifiedShow Answer

How is most of the carbon dioxide in the body transported?

Correct AnswerverifiedShow Answer

Which region of the pharynx contains the tonsils?

Correct AnswerverifiedA

The alveoli contain small amounts of fluid to

Correct AnswerverifiedShow Answer

What function do the vestibular folds of the larynx serve?

Correct AnswerverifiedB

A piece of cartilage called the ____________________ closes over the top of the larynx during swallowing to direct food and liquids into the esophagus.

Correct AnswerverifiedShow Answer

Air is warmed and moistened in the

Correct AnswerverifiedD

The opening between the vocal cords is called the ____________________.

Correct AnswerverifiedShow Answer

Which factor is key in allowing the body to absorb oxygen and expel carbon dioxide?

Correct AnswerverifiedShow Answer

The principle that states that at a constant temperature,a given volume of gas will exert more pressure in a smaller space than it will in a larger space is known as ____________________.

Correct AnswerverifiedShow Answer

Based on your knowledge of the anatomy of the lower respiratory tract,where is the most likely location for an aspirated (inhaled) piece of food to lodge and why?

Correct AnswerverifiedShow Answer

What is the respiratory membrane and what is its role in ventilation?

Correct AnswerverifiedShow Answer

Which of the following statements is true?

Correct AnswerverifiedShow Answer

Which substance normally exists in the pleural cavity?

Correct AnswerverifiedShow Answer

If someone experiences a loss of intrapleural pressure,what will occur?

Correct AnswerverifiedShow Answer

The amount of air inhaled and exhaled during quiet breathing is known as

Correct AnswerverifiedShow Answer

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D

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