1) Your body couldn’t breathe without this system. Which one is it? a) Circulatory System b) Respiratory System c) Digestive System 2) The respiratory system is made up of the trachea, the lungs, and the: a) liver b) Diaphragm c) Stomach 3) When you breathe in air, you bring oxygen into your lungs and blow out: a) Carbon monoxide b) Hydrogen c) Carbon dioxide 4) When you inhale, your lungs a) inflate b) deflate c) remain as it is 5) What is the name of the tiny air sacs in your lungs? a) Bronchioles b) Alveoli c) Ravioli 6) The trachea is also called the a) Lung b) Windpipe c) Diaphragm 7) The voice box is also known as the a) larynx b) Trachea c) pharynx 8) As you breathe, this contracts and flattens to give your lungs room to fill up with air: a) Diaphragm b) Bronchiole c) pharynx 9) Any living thing that lives on or in the body of another living thing is called a) host b) parasite c) vector 10) Body defence 'tears' protects the body from disease by a) tarping germs b) contain a chemical substance that kills some bacteria c) kill bacteria in food we have eaten

Respiratory system

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