Listen to these words.
cells
tissues
organs
systems
trillion
skeleton
circulatory
digestive
respiratory
immune system
nervous system
musculoskeletal
excrete
hormones
Learn the new words!
Messenger molecules in our bodies that bring about bodily change in response to our environment.
hormones
To remove waste from our bodies.
excrete
System that helps us move our bodies. Made up of bones and muscles.
musculoskeletal
System that helps us think, feel, and act. Made up of the brain and nerves.
nervous system
System that protects us from diseases.
immune system
System that helps us breathe in oxygen for our cells to use. Made from lungs and diaphragm.
respiratory
System that helps us break down food into nutrients and energy.
digestive
System that pumps blood through our bodies.
circulatory
All of the bones that hold our bodies in place and shape us.
skeleton
1,000,000,000,000. A million million.
trillion
Groups of organs that work together to perform one job throughout the body. Like your heart and blood vessels helping to pump blood all through your body within the circulatory system.
systems
Groups of tissues that do one job together. Like your heart.
organs
Groups of cells with a similar shape and job. Like heart tissue.
tissues
Smallest part of all living things. We need them to do all of life’s functions.
cells
Now, do the test!