Respiratory System

When you breathe, your lungs take in ___ and remove ___.

• air/oxygen

• oxygen/carbon dioxide

• carbon dioxide/nitrogen

• oxygen/air

The two main branches from the trachea (one to each lung)

• bronchi
• alveoli
• capillaries
• bronchioles

The air sacs that are covered with capillaries that separate gases we need from gases we don't need.

• bronchi
• lungs
• oxygen
• alveoli

What is the function of the bronchi (bronchial tubes)?

• Transport air from nose to lungs
• Transport air from trachea to lungs
• Transport air from lungs to alveoli
• Transport air from alveoli to blood

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body
• to bring oxygen to the body
• to break down food and absorb nutrients
• to remove oxygen from the body and deliver carbon dioxide

Within the lungs, the exchange of oxygen and carbon dioxide occurs between the ___ and the capillaries. 

• trachea 
• bronchi 
• alveoli
• diaphragm

Name the organ labeled #8

• alveoli 
• bronchi 
• trachea 
• lungs 

Name the structure labeled #6

• lungs 

• trachea 

• diaphragm 

• alveoli 

What does the Larynx do ?

• The larynx is part of the Endocrine system 
• The larynx is part of the plant cells. 
• The larynx holds the vocal chords. 
• The larynx is part of animal tissues. 

How is carbon dioxide released from the body? 

• When we exhale
• When we urinate
• When we sweat
• When we inhale