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2.4 Respiratory System

AB
What is the definition of respiration?A body takes in O2 and gives off CO2
How many parts does the respiration system have?2 (breathing and the O2/CO2 exchange in the alveoli)
Another name for the windpipe is the...Trachea
The trachea splits into 2 __ which go to the left and right lungBronchi (Latin for branch)
The Bronchi divide down to very small...Bronchioles
The bronchioles end up in small air sacs called...Alveoli (your lungs have 300,000,000 of them)
The actual O2/CO2 exchange takes place in the ___ of the respiratory systemAlveoli
Alveoli are surrounded by ___ where O2 is picked up and CO2 given offCapillaries
Pulmonary means...Lungs
A doctor specializing in Cardiopulmonary surgeries would treat...Hearts and Lungs
The muscle at the bottom of your lungs that contracts to draw in air is the...diaphragm
Blood enters the alveoli __ in color and leave __Blue Red
The __ carries deoxygenated blood to the lungsPulmonary Artery (only artery that carries blue blood)
Air is drawn into your lungs when the diaphragm make the space around your lungs...get bigger or expand
What keeps your trachea openRings of cartilage


7th Grade Physical Science
Elkhorn Ridge Middle School
Fremont, NE

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