Respiratory System

What is the function of the upper respiratory system?

• Gas exchange

• Filter, moisten, and warm air during inspiration

• Vocalization

• Digestion

Which part of the respiratory system is involved in the sense of smell?

• Sinuses

• Pharynx

• Olfactory receptors

• Larynx

What is the function of sinuses?

• Vocalization

• Warms and moistens air

• Gas exchange

• Sense of smell

What is the purpose of the epiglottis in the larynx?

• Produces sound

• Closes the larynx during swallowing

• Filters air

• Warms the air

What is the windpipe called?

• Bronchi

• Larynx

• Trachea

• Alveoli

What structures keep the trachea open?

• Smooth muscles

• Rings of cartilage

• Ligaments

• Blood vessels

Where does the trachea divide into the right and left bronchi?

• Larynx

• Alveoli

• Pharynx

• Carina

What are the primary gas-exchange units in the respiratory system?

• Pharynx

• Alveoli

• Bronchi

• Sinuses

What is the role of hemoglobin in oxygen transport?

• Produces oxygen

• Binds to oxygen in the bloodstream

• Carries carbon dioxide

• Filters air

How many bronchioles are there in each lung?

• 10,000

• 20,000

• 30,000

• 40,000