Digestive, Respiratory & Circulatory System

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

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

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

• bronchi
• alveoli
• capillaries
• bronchioles

The air sacs that are covered with capillaries where gas exchange takes place

• bronchi
• lungs
• oxygen
• alveoli

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

The larynx is also known as the...

• Voice box
• Passage to the lungs
• Long vein
• Airway

What organ pumps blood throughout the body?

• lung
• heart
• diaphragm
• stomach

Diaphragm

• Muscle beneath the lungs that contacts and relaxes to move gases in and out  of the body
• Factor during an experiment
• Filters blood
• Deoxyribose acid 

Trachea

• a thick band of tissue 
• vaccine
• air-conducting tube that connects the larynx with the bronchi
• waste water 

What is tube that is also known as your wind pipe?

• esophogus
• bronchi
• trachea
• alveoli

What are the main organs of the respiratory system?

• muscles
• lungs
• nose and mouth
• bronchi