Cardiovascular System Crossword

This printable crossword puzzle on the topic of Human Body Systems has 15 clues. Answers range from 3 to 15 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

little door like flaps that open to allow blood flow.
This is the cardiac muscle
I carry the blood away from the heart
I return the blood to the heart
We are the smallest vessels in the body
we defend your body against infection
if you get a cut, we help the blood to clot
I am the upper chamber
I am the lower chamber
When I lack oxygen I am this color
when I am rich in oxygen I am this color
the heart beats about 90 times a _______
the heart beats about 100,000 times a
a child's heart weighs about 1/4___________
the blood cells get oxygen from the ___________