Question 1

Hypocapnia induced by voluntary hyperventilation can be dangerous, especially to swimmers, because the oxygen level in the brain tissues may drop dangerously low and cause fainting.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following passageways are directly connected to the laryngopharynx?

Accepted Answer

A)  larynx
B)  oropharynx
C)  esophagus
D)  all of the choices are correct
E)  only larynx and esophagus

Question 3

Which of the following is NOT a characteristic of the inflation reflex of the lungs?

Accepted Answer

A)  Stretch receptors are activated during overinflation.
B)  Proprioceptors are activated to stimulate deeper inspirations.
C)  The dorsal respiratory group is inhibited.
D)  Once this reflex is activated, exhalation begins.
E)  This is a protective reflex that prevents damage to lungs due to overinflation.

Question 4

Which labeled point in the diagram of external and internal respiration would have a PCO2 equal to 45 mm Hg under normal breathing conditions at sea level? 2 equal to 45 mm Hg under normal breathing conditions at sea level?   A) C only B) D only C) E only D) B and C E) D and E" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  C only
B)  D only
C)  E only
D)  B and C
E)  D and E

Question 5

Based on the volumes shown in the spirogram, what is the resting minute ventilation (MV) of this individual at a breathing rate of 12 breaths per min?

Accepted Answer

A)  2,400 ml/min
B)  3,600 ml/min
C)  4,800 ml min
D)  6,000 ml/min
E)  14,400 ml/min

Question 6

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

Accepted Answer

A)  transport of nutrients to tissues
B)  ventilation of lungs
C)  gas exchange between lungs and blood
D)  regulation of pH
E)  production of sound

Question 7

Expiration during normal quiet breathing is a passive process requiring no muscular contractions.

Accepted Answer

A) True 
 B)False

Question 8

The respiratory zone of the respiratory system consists of tissues that facilitate

Accepted Answer

A)  air filtration.
B)  gas exchange between air and blood.
C)  passage of air into the lungs.
D)  moistening of the air inside the lungs.
E)  sound production.

Question 9

Cigarette smoking is the single most preventable cause of death and disability worldwide.

Accepted Answer

A) True 
 B)False

Question 10

The main respiratory functions of the nasal cavity are to filter, warm, and moisten incoming air.

Accepted Answer

A) True 
 B)False

Question 11

The nostrils are also called external nares.

Accepted Answer

A) True 
 B)False

Question 12

The false vocal cords

Accepted Answer

A)  aid in the production of low pitch sound.
B)  are located in the lower larynx.
C)  produce the highest volume sounds.
D)  All of the choices are correct.
E)  None of the choices is correct.

Question 13

Exerting greater air pressure on the true vocal cords leads to

Accepted Answer

A)  a higher pitch sound.
B)  a lower volume sound.
C)  a higher volume sound.
D)  a lower pitch sound.
E)  no change in sound.

Question 14

Which of the following structures in the respiratory system is commonly called the Adam's apple?

Accepted Answer

A)  thyroid cartilage
B)  epiglottis
C)  cricoid cartilage
D)  arytenoid cartilage
E)  laryngopharynx

Question 15

The palatine tonsils are found in the

Accepted Answer

A)  nasopharynx
B)  oropharynx
C)  laryngopharynx
D)  larynx
E)  nasal cavity

Question 16

In general, adult males have lower pitched voices because testosterone stimulates the thickening and lengthening of the false vocal folds.

Accepted Answer

A) True 
 B)False

Question 17

The exchange of gases between the air spaces (alveoli) of the lungs and the blood in pulmonary capillaries, where the blood gains O2 and loses CO2, is called

Accepted Answer

A)  internal respiration
B)  osmosis
C)  external respiration
D)  homeostasis
E)  buoyancy ventilation

Question 18

The C-shaped rings that provide support for the wall of the trachea are made out of

Accepted Answer

A)  hyaline cartilage
B)  elastic cartilage
C)  fibrocartilage
D)  reticular connective tissue
E)  bone

Question 19

Deep labored inhalations involve contraction of all of the following muscles EXCEPT the

Accepted Answer

A)  sternocleidomastoid
B)  diaphragm
C)  scalene muscles
D)  external intercostals
E)  internal intercostals

Question 20

The flap of elastic cartilage covered by epithelium that closes off the larynx and prevents food and water from entering the larynx during swallowing is called the

Accepted Answer

A)  epiglottis
B)  glottis
C)  thyroid cartilage
D)  arytenoid cartilage
E)  cricoid cartilage

Exam 18: The Respiratory System

Expiration during normal quiet breathing is a passive process requiring no muscular contractions.

Correct AnswerverifiedShow Answer

Which of the following is NOT a characteristic of the inflation reflex of the lungs?

Correct AnswerverifiedShow Answer

The flap of elastic cartilage covered by epithelium that closes off the larynx and prevents food and water from entering the larynx during swallowing is called the

Correct AnswerverifiedShow Answer

Exerting greater air pressure on the true vocal cords leads to

Correct AnswerverifiedShow Answer

Based on the volumes shown in the spirogram, what is the resting minute ventilation (MV) of this individual at a breathing rate of 12 breaths per min?

Correct AnswerverifiedShow Answer

Deep labored inhalations involve contraction of all of the following muscles EXCEPT the

Correct AnswerverifiedShow Answer

Which of the following structures in the respiratory system is commonly called the Adam's apple?

Correct AnswerverifiedShow Answer

The exchange of gases between the air spaces (alveoli) of the lungs and the blood in pulmonary capillaries, where the blood gains O2 and loses CO2, is called

Correct AnswerverifiedShow Answer

The main respiratory functions of the nasal cavity are to filter, warm, and moisten incoming air.

Correct AnswerverifiedShow Answer

Which of the following passageways are directly connected to the laryngopharynx?

Correct AnswerverifiedShow Answer

The nostrils are also called external nares.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The false vocal cords

Correct AnswerverifiedShow Answer

Hypocapnia induced by voluntary hyperventilation can be dangerous, especially to swimmers, because the oxygen level in the brain tissues may drop dangerously low and cause fainting.

Correct AnswerverifiedShow Answer

The C-shaped rings that provide support for the wall of the trachea are made out of

Correct AnswerverifiedShow Answer

The respiratory zone of the respiratory system consists of tissues that facilitate

Correct AnswerverifiedShow Answer

Which labeled point in the diagram of external and internal respiration would have a PCO2 equal to 45 mm Hg under normal breathing conditions at sea level?

Correct AnswerverifiedShow Answer

In general, adult males have lower pitched voices because testosterone stimulates the thickening and lengthening of the false vocal folds.

Correct AnswerverifiedShow Answer

The palatine tonsils are found in the

Correct AnswerverifiedShow Answer

Cigarette smoking is the single most preventable cause of death and disability worldwide.

Correct AnswerverifiedShow Answer

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The exchange of gases between the air spaces (alveoli) of the lungs and the blood in pulmonary capillaries, where the blood gains O₂ and loses CO₂, is called

Correct Answer
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Which labeled point in the diagram of external and internal respiration would have a PCO₂ equal to 45 mm Hg under normal breathing conditions at sea level?

Correct Answer
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