What gas do we breath when we exhale?

• oxygen

• helium

• carbon dioxide

• hydrogen

What connects the larynx to the lungs?

• trachea

• pharynx

• nasal cavity

• diaphragm

You can inhale through your ... (choose all that apply)

• nose

• skin

• ears

• mouth

This is a gas our cells need to survive.

• helium

• carbon dioxide

• oxygen

• nitrogen

Why should you breath through your nose? (choose all that apply)

• It moistens air.

• It warms air.

• It is the only way to breath in air.

• It filters air.

The flap of skin that prevents food and water to enter the trachea.

• vocal cords

• pharynx

• larynx

• epiglottis

Parts of the respiratory system, check all that apply.

• trachea

• esophagus

• nasal cavity

• lungs

• skin

What is the function of the respiratory system?

• removes wastes from the body

• provide us with oxygen and remove carbon dioxide

• breaks down food for nutrients for the body

• provides movement for the body

What organ does oxygen begin to enter the blood stream?

• nasal cavity

• lungs

• bronchioles

• alveoli

What is the order that oxygen travels when it is inhaled?

• nasal cavity, bronchi tubes, pharynx, trachea, alveoli

• nasal cavity, pharynx, trachea, bronchi tubes, alveoli

• nasal cavity, trachea, pharynx, bronchi tubes, alveoli

• nasal cavity, trachea, pharynx, alveoli, bronchi tubes