Across
- 2. Control center of the nervous system
- 3. Long, thread-like structures that transmit signals in the nervous system.
- 5. Cord Structure extending from the brain down the back that transmits signals.
- 7. The tube that carries urine from the bladder to the outside of the body.
- 8. Blood that goes away from the heart
- 9. Muscle Voluntary muscles attached to bones, responsible for movement.
Down
- 1. Organs that filter blood and produce urine.
- 4. Blood that goes towards the heart
- 6. Organs responsible for gas exchange in the respiratory system.
- 8. The site of gas exchange in the lungs.