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Human Body Systems

Across
This organ works with your lungs to allow air in and out of your body
Carry oxygen rich blood away from the heart to the rest of the body
There are 206 of these in the adult body
This system supplies your body with energy and breaks down food; it begins in your mouth
Carry blood back to the heart to release carbon dioxide
These muscles are attached to bones and skin and work in pairs to move body parts
The part of the body that is responsible for pumping blood through your blood vessels
Tiny sacs where oxygen is absorbed and carbon dioxide is released from the blood
The body system that supplies the body with constant oxygen and nutrients
Down
Air travels down this tube to your lungs; Also known as your "windpipe"
The body system that provides support and protection for your body; made up of your bones
A group of organs that work together to perform a specific job
The body system that is responsible for responding to information, your thoughts, and feelings
When a muscle moves without you controlling it, not voluntarily
This system is made up of all the muscles in your body and allows you to move
This organ absorbs oxygen for your body
All cells need this