respiratory system

This is a tube about 12cm long with c-shaped rings of cartilage to keep it open

• Nasal cavity
• Trachea
• Mouth Cavity
• Pharynx

Muscular structure that helps to expand and contract the lungs, forcing air in and out

• Pharynx
• Nasal cavity
• Alveoli
• Diaphragm

Made up of spongy, elastic tissue that stretches as you breathe

• Alveoli
• Lungs
• Nasal Cavity
• Pharynx

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body

• o break down food and absorb nutrients

• to remove oxygen from the body and deliver carbon dioxide

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

• air/oxygen
• oxygen/carbon dioxide 
• carbon dioxide/waste 
• waste/air 

The circulatory system works with the ___________ system to provide our body with oxygen and get rid of CO2 (carbon dioxide).

• respiratory

• digestive

• muscular

• skeletal

After air moves through the pharynx it continues downward. The _____, or windpipe, directs the air into 2 separate branches or tubes.

• mucus
• trachea
• larynx
• epiglottis

the ____ look like a wasp's nest and is where the exchange of oxygen and carbon dioxide takes places.

• alveoli
• bronchial tubes
• lung
• diaphragm

healthy _____ are usually pink in color. You have two of these.

• alveoli
• epiglottis
• lungs
• trachea

the gas known as _______ is needed to stay alive and properly.

• oxygen
• carbon dioxide
• nitrogen
• helium