This printable crossword puzzle on the topic of Human Body Systems has 16 clues. Answers range from 5 to 23 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
The major structure in the brain
System outside the brain and spinal cord
An effect/reaction to something
A reaction after something is done
Specialized cell that sends nerve impulses
Cord-like fibers that are enclosed
The organ in your head that controls your body's activities
Connects nearly all body parts to the brain
In vertebrates it comprises the brain and spinal cord
The part of the brain at the back of the skull in vertebrates
A response to a reaction
Produces hormones into the blood
Substance that goes around the body fluid
Controls body temperature, hunger, and thirst
A gland that controls growth and development
Counter action that is effected by it's own influence