It is also known as the windpipe which carries air from the throat into the lungs.

• trachea

• pharynx

• bronchi

• larynx

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

It serves as passage of both air and food.

• pharynx

• larynx

• epiglottis

• nasal cavity

What is the main function of the respiratory system?

• excretion of carbon dioxide

• gaseous exchange

• oxygenation of blood

• secretion of hormones

These are tiny sacs of lung tissue specialized for the movement of gases between air and blood.

• alveoli

• bronchi

• bronchioles

• coarse hairs

Tags

NGSS.MS-LS1-3

It is the passage that directs air into the lungs.

• bronchi

• bronchioles

• alveoli

• trachea

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

• nose
• mouth
• bronchi
• alveoli

What are the functions of the respiratory system?

Select ALL that apply.

• provides oxygen for your cells

• removes CO2 and H2O when you exhale

• carries oxygen and nutrients

• provides shape and support for muscles

Respiration is the process of exchange of _______ and ______.

• blood; air

• blood; oxygen

• oxygen; other gases

• oxygen; carbon dioxide

Tags

NGSS.MS-LS1-2

It is also known as the windpipe.

• trachea

• pharynx

• larynx

• nasal cavity