heart and lungs

Which of the following shows what happens to the chest cavity when air rushes into the lungs?

• decrease in volume

• deflates

• expands

• relaxes

Which of the following happens when you exhale?

• chest cavity expands

• your lumgs become smaller

• your chest cavity becomes smaller

• your lungs take in and give off oxygen

As you breath in and out when do your lungs expand?

• when air rushes in

• when air rushes out

• when your diaphragm expands

• when your chest cavity relaxes

The pathway of air into the lungs is:

• 
• 
• 
• 

Which of the pairs of words below are the waste products of respiration?

• oxygen and water

• oxygen and carbon dioxide

• carbon dioxide and water

• oxygen, carbon dioxide and water

Why does your body need oxygen?

• to produce energy

• to expel carbon dioxide

• to supply the food with oxygen

• to fill the lungs with oxygen

What do we take in when we inhale?

• carbon dioxide

• oxygen

• lungs

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

• bronchi
• alveoli
• capillaries
• bronchioles

Name the organ label # 6. 

• alveoli 
• bronchi 
• trachea 
• lungs