Multiple Choice Questions
 

1.  Ventilation refers to the  
A.  movement of air into and out of the lungs.
B.  gas exchange between the blood and the tissues.
C.  transportation of oxygen and carbon dioxide in the blood.
D.  gas exchange between the air in the lungs and the blood.
E.  respiration at the cellular level.

2.  Internal respiration refers to  
A.  atmospheric air coming into the lungs.
B.  gas exchange between the lungs and the blood.
C.  gas exchange in the atmosphere.
D.  gas exchange between the blood and body tissues.
E.  cellular respiration.

3.  External respiration refers to  
A.  atmospheric air coming into the lungs.
B.  gas exchange between the lungs and the blood.
C.  gas exchange in the atmosphere.
D.  gas exchange between the blood and body tissues.
E.  cellular respiration.

4.  A protective function of the respiratory system would be  
A.  altering blood pH by changing blood CO₂ levels.
B.  olfaction by drawing molecules into the nasal cavity.
C.  producing ACE which helps regulate blood pressure.
D.  preventing microorganisms from entering the body.

5.  Which of the following is NOT a function of the respiratory system?  
A.  olfaction
B.  taste
C.  production of chemical mediators
D.  voice production
E.  regulation of blood pH

6.  Which of the following is NOT a process of respiration?  
A.  voice production
B.  internal respiration    
C.  ventilation
D.  external respiration
E.  transport of blood gases in the blood

7.  Which of the following is part of the upper respiratory tract?  
A.  lungs
B.  pharynx
C.  trachea
D.  bronchi
E.  bronchioles

8.  The nasal septum  
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.

9.  Which of the following functions is associated with the nose?  
A.  initiating the cough reflex
B.  external respiration
C.  warming the air
D.  producing mucus to trap debris from the air
E.  warming the air and producing mucus to trap debris from the air

10.  Which of the following structures opens directly into the nasal cavity?  
A.  paranasal sinuses
B.  auditory tubes
C.  lacrimal glands
D.  fauces
E.  epiglottis