How can we help?
You can also find more resources in our
Select a category
Something is confusing
Something is broken
I have a suggestion
What is your email?
What is 1 + 3?
11organ systems of the human body
skin, hair, nails protect underlying tissue
your skeletal muscles move your bones
bones provide a frame to support and protect body parts
heart pumps blood thru all your blood vessels
lungs absorb oxygen and release carbon dioxide
removes waste from blood and regulates body's fluids
receive and send electrical messages throughout body
returns leaked fluids to blood vessels; gets rid of germs that harm you
breaks down food you eat into nutrients that can be absorbed into the body
glands regulate body functions by sending out chemical messengers; ovaries in females and testes in male are part of this system
Reproductive system (male)
produces and delivers sperm
Reproductive system (female)
produces eggs and nourishes and shelters unborn babies