What is an organ?
A body part that performs a function
What is an organ system?
A group of organs that work together to do a job for the body
When you breathe, air enters through your ___ and _____.
mouth/ nose
The air then moves along the _____ to the lungs
trachea (windpipe)
The ____ pumps the oxygen-rich blood to the body.
heart
The heart pumps this oxygen-rich blood to the body through a system of tubes called____.
arteries
Blood is returned to the heart in tubes called ___.
veins
The ____ are the main organs of the respiratory system.
lungs
The respiratory system is the network of organs that help you_____.
breathe
The ____ is the main organ of the circulatory system.
heart
The respiratory system and circulatory system work together to deliver _____ in the body.
oxygen
Trachea is also called ___.
windpipe
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