Respiratory System

When we breathe in ___________, enters our lungs and passes through our lungs.

• carbon dioxide

• oxygen

When we breathe out, ____________ leaves our body.

• Carbon dioxide

• oxygen

What are the main organs in the Respiratory system

• The Heart

• The Lungs

• The Stomach

• The Brain

The respiratory system is made up of

• the heart, blood, trachea, bronchi

• nostril, trachea, bronchi, lungs

• brain, muscles, lungs

Where is the vocal cords?

• Larynx

• Trachea

• Pharynx

• Mouth

The _______________ is a tube that connects the upper respiratory system to the lungs.

• Mouth

• Trachea

• Larynx

__________________ are many tiny air sacs of the lungs which allow for rapid gaseous exchange.

• alveolus

• lungs

• bronchioles

• trachea

_______________are air passages inside the lungs that branch off like tree limbs from the bronchi.

• Alveolus

• Bronchioles

• Lungs

• Trachea

One of the respiratory system function is to __________ dust and microbes from entering the body through mucus production, cilia and coughing.

Gas exchange is the delivery of _____________ from the lungs to the bloodstream, and the elimination of _______________ from the bloodstream to the lungs.

• oxygen, water

• oxygen, carbon dioxide

• carbon dioxide, water