| A | B |
|---|
| Red blood cells | carries oxygen to cells. |
| White blood cells | fights disease |
| Platelets | helps blood clot |
| Plasma | liquid part of blood |
| arteries | carries blood away from the heart |
| veins | carries blood back to the heart |
| Capillaries | small blood vessels that exchange nutrients and gases with cells |
| atrium | pumps blood into the heart |
| ventricle | pumps blood out of the heart |
| Coronary circulation | the flow of blood within the heart itself. |
| Pulmonary circulation | the flow of blood through the heart to the lungs |
| Systemic circulation | the flow of blood to all of the organs and tissues in your body |
| Dendrites | receive signals from other neurons |
| Axons | carry the signal away from the cell body. |
| Synapse | The gap between neurons |
| neurotransmitters | chemicals that carry the electrical signal to the next neuron. |
| Sensory Neurons | Transmit signals from sense organs |
| Motor Neurons | Transmit signals from the central nervous system to your muscles to tell them to move. |
| Interneurons | Transmit messages between sensory and motor neurons. |
| Alveoli | tiny air sacs at the end of the bronchial tubes |
| Diaphragm | a dome-shape muscle that the lungs rest on |
| Cerebrum | Control center of your thoughts and voluntary actions |
| Cerebellum | Helps with balance and coordination |
| Brain Stem | Connects the brain to the spinal cord. |
| Spinal cord | connects with nerves outside of the central nervous system |
