THE RESPIRATORY SYSTEM

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

• Assists with homeostasis of body pH 
• Distributes oxygen to cells 
• Filters air 
• Warms air

Boyle’s law states that the volume of a gas varies _____ with pressure at a _____ temperature.

• inversely; constantly changing
•  directly; constantly changing
• inversely; constant 
•  directly; constant

The respiratory epithelium of the conducting airways consists of  

• pseudostratified ciliated columnar epithelium. 
•  moist cuboidal epithelium. 
• simple squamous epithelium.
•  ciliated squamous epithelium. 

Functions of the nasal cavity include which of the following? 

•  filtering the air 
• humidifying the air 
• trapping airborne particles
• all of the above

The common passageway shared by the respiratory and digestive systems is the 

• glottis. 
• pharynx. 
• larynx. 
• trachea

When the pressure in the lung is greater than atmospheric pressure:

•  the bronchioles are obstructed.
•  lung tissue has collapsed
• inspiration occurs.
• expiration occurs. 

The term used to describe the volume of air exchanged during normal inspiration and expiration is:

• inspiratory and expiratory reserve volume.
• vital capacity.
•  tidal volume. 
• residual volume.

Breathing through the nose rather than the mouth is advantageous because

•  air is humidified on inhalation.
• heat loss is reduced on exhalation.
• water loss is reduced on exhalation. 
•  all of the above 

The elastic cartilage that covers the opening to the larynx during swallowing is the 

• epiglottis. 
• cuneiform cartilage. 
• cricoid cartilage.
• thyroid cartilage

All of the following provide chemoreceptor input to the respiratory centers of the medulla oblongata, except the  

•  olfactory epithelium.
• medullary chemoreceptors. 
• aortic body.
• carotid body