Animal Systems Crossword Challenge!

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

Another name for red blood cells
Open and close to control blood flow
Bulging of the veins, caused by minimal skeletal movement
Procedure needed to detect Atherosclerosis
Tissue that surrounds the heart
A vessel used for transporting blood away from the heart
Where digestion occurs in the human body
The phylum of a sponge
What system brings oxygen into the body and releases carbon dioxide and other gases?
Name of the ridges of muscle tissues that line the stomach, helps the stomach expand to digest food.
What system removes waste from your body?
Name of the "relaxed state" during the Cardiac Cycle