Circulatory System
The smallest part of your body that is alive is a ____.
cell
The _____ are organs that help the body exchange oxygen and carbon dioxide with the air outside the body.
lungs
The skeletal and muscular systems support your body and help it ____.
move
The ________ ______ gathers information about the environment and tells different parts of the body what to do.
nervous system
A _________ is a group of the same kind of cells that work together to do the same job.
tissue
A dome shaped muscle called the ________ moves when you inhale and exhale, making more room in your chest for air.
diaphragm
These systems include the _____ and _______.
bones and muscles
The nervous system includes the brain, sense organs, and ______.
nerves
The circulatory system moves _______ throughout your body.
blood
The _______________ system is the system of the body that helps you breathe.
respiratory
Your ________ is made up of all the bones in your body.
skeleton
Nerve cells are also called _______.
Neurons
The circulatory system includes the _____, blood, and blood vessels.
heart
The respiratory system includes the nose, mouth, trachea, bronchi, bronchioles, and ___ _____ in the lungs.
air sacs
Your ________ are organs that work together to move your body.
muscles
The _____ is the main organ, or control center, of the nervous system.
brain