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Respiratory System & Circulatory System

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Across
1
__________ is the liquid that carries oxygen and nutrients to your cells and waste away from your cells.
6
__________ help your blood clot to make a scab when you're cut.
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__________ is a clear yellow liquid in your blood.
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Teeny tiny blood vessels called _____________ trade oxygen for carbon dioxide.
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________ blood cells defend us from germs and viruses.
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The trachea splits into 2 tubes called the ____________.
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The windpipe that leads from your mouth to your lungs is the __________.
Down
2
Every cell in your body needs a gas called _________ to survive.
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You breathe our carbon dioxide along with water __________.
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Air enters your lungs when a flat muscle called the _________ contracts.
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_______ blood cells contain iron and carry oxygen.
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The circulatory system is made of blood, the heart, and the blood ___________.
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Blood's path makes a _________ that goes back to your heart.
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Blood vessels called ___________ carry oxygen-rich blood away from your heart.
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Blood vessels called __________ bring oxygen-poor blood back to the heart.