Body Systems and levels of organization Crossword

This printable crossword puzzle on the topic of Human Body Systems has 10 clues. Answers range from 4 to 17 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

what body system is made up of the brain and the nerves.
what body system is made up of the heart, blood vessels and blood.
what body system is the group of cells and organs which are responsible for protecting the body against infections.
what body system is responsible for breathing.
what body system is the group of organs which is responsible for digesting and extracting nutrients from the food we eat.
what level of organization is the smallest
what is the second smallest level of organization
what is the 3rd level of organization
what level of organization is the organ systems
a human is an example of what