quiz Jerry 1.11

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

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

Why does your body need to breathe out carbon dioxide?

• Without it, the lungs would not function.
• It can be harmful if it builds up in the bloodstream.
• You need it for your body to survive.
• It is delivered to the heart.

What is the main organ in the respiratory system?

• Kidney
• Heart
• Lungs
• Diaphragm

When you exercise, your heart beats faster to...

• spread oxygen throughout your body more quickly.
• make you feel excited.
• let you know you're working hard.

Oxygen from the air enters the blood stream at what location?

• Cardiac Notch
• Pulmonary Vein
• Alveoli
• Paranasal Sinuses

Which of the following does NOT make up part of the lungs?

• Alveoli
• Bronchioles
• Trachea
• Bronchi

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

As you breathe this contracts and flattens to give your lungs room to fill up with air.

• larynx
• lung balloon
• diaphragm
• heart

Alveoli have very thick walls to maximise the distance that gases have to move.

• True

• False

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

• bronchi
• lungs
• oxygen
• alveoli