Circulatory System Crossword

This printable crossword puzzle on the topic of Human Body Systems has 18 clues. Answers range from 4 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

This vein empties into the right atrium from the upper part of the body.
This vein empties into the right atrium from the lower part of the body.
These prevent blood from flowing the wrong way in the heart.
How many chambers are there in the heart?
This is the strongest blood vessel in the body.
The bottom chambers of the heart.
The upper chambers of the heart.
Word associated with lungs.
Blood's waste product
Oxygen attaches to this to reach all parts of the body.
These fight disease and infections.
These carry blood away from the heart.
These carry blood back to the heart.
These are the tiny vessels that exchange oxygen and carbon dioxide in the blood.
Size of the heart
Liquid part of the blood.
Blood clotters
Beats per minute.