Circulatory System Crossword

This printable crossword puzzle on the topic of Human Body Systems has 10 clues. Answers range from 5 to 11 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

Metaphorically some people don't have this.
We bleed this.
This is visible on strong people.
Microscopic, they make up everything that lives.
I am the smallest of my type. I carry blood around the body.
Music has this as well as the heart.
In the body, on blood cells, these block up holes.
Is in blood cells, also the fourth state of matter.
It is a musical instrument related to the piano.
Title of this crossword.