What is the main function of the respiratory system?

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

Which of the following is a part of the respiratory system?

• lungs
• stomach
• large intestines
• heart

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

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

The air sacs that are covered with capillaries where gas exchange takes place are found in..?

• bronchi
• lungs
• oxygen
• alveoli

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

• esophogus
• bronchi
• trachea
• alveoli

What type of cells carry oxygen?

• red blood cells
• white blood cells
• neurons

The larynx is also known as the...

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

What is a 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 

What are bronchi?

• connects the brain and spinal cord 
• number of protons
• part of earth and supports life
• 2 short tubes that branch off of the lower end of the trachea and carry air to the lungs

What is the pharynx?

• Outward physical appearance 
• Tube-like passage way for air, food, liquid
• Airway to vocal cords