Across
- 2. The basic structural and functional units of all living organisms.
- 3. The control center of the nervous system.
- 6. Tubes that carry blood.
- 9. The organ that pumps blood around the body.
- 10. Blood vessels that carry blood away from the heart.
Down
- 1. One of the lower pumping chambers of the heart.
- 4. Small veins that collect blood from capillaries.
- 5. The main artery carrying oxygenated blood from the left ventricle to the rest of the body.
- 7. The primary organs of the respiratory system where gas exchange occurs.
- 8. Blood vessels that carry blood towards the heart.