Circulatory system crossword

This printable crossword puzzle on the topic of Human Body Systems has 12 clues. Answers range from 5 to 20 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

Compound made when oxygen binds to haemoglobin
Structures found in the heart and veins which prevent backflow of blood
The vessel that takes blood to the lungs
The vessel that brings blood from the lungs to the heart
The vessel that takes blood out of the heart and to the body
The vessel that brings blood from the body into the heart
Tiny blood vessels found in the tissue
The cells responsible for transporting oxygen
Disease caused by build up of fatty material in the blood vessels
Drugs used to treat high cholesterol
Type of surgery used to treat certain types of heart disease
A large component of the blood, carrying water, nutrients and hormones