Unit 11 Review: Respiratory & Digestive Systems

It leads air into the appropriate channel and functions mainly in speech. (a)  

• larynx
• pharynx
• trachea
• bronchi

Air is filtered, cleaned and warmed in what part of the respiratory system?

• nose
• mouth
• bronchi
• alveoli

What is the main function of the respiratory system?

• excretion of carbon dioxide

• gaseous exchange

• oxygenation of blood

• secretion of hormones

It is a small flip cartilage tissue that covers the trachea to prevent any solid object to pass in the lungs.

• larynx

• epiglottis

• pharynx

• nasal cavity

Reorder the path of oxygen from the nostrils to the lungs.

• trachea

• nasal cavity

• pharynx

• larynx

Reorder to show the path of oxygen after it enters the lungs.

• alveoli

• bronchi

• blood

• bronchioles

What is the function of the cilia that extend from the cells lining the respiratory system?

• Cilia help move foreign particles out of the respiratory tract.

• Cilia help transport oxygen molecules into the respiratory system.

• Cilia help regulate the temperature of the respiratory system.

• Cilia help produce mucus to protect the respiratory system.

What are the two gases majorly involved in human respiration process?

• methane

• oxygen

• nitrogen

• carbon monoxide

• carbon dioxide

This serves as a passageway for food and air.

• larynx

• pharynx

• trachea

This is where the gas exchange happens.

• bronchus

• bronchiole

• alveolus