Across
- 1. a primary lymphoid organ in the immune system.
- 3. a pair of spongy, air-filled organs located on either side of the chest (thorax).
- 4. the process living things use to maintain stable conditions.
- 7. a system that carries blood away and towards the heart.
- 9. an organ that functions as the nervous system's nerve center
- 10. discharged from the body
- 11. the system in an organism's body that performs the function of disposing of wastes through peeing or pooping.
- 12. a kind of body tissue made up of lengthy cells that can stretch and move.
- 13. our body’s central framework which is all our bones in our body.
- 15. a system that helps the body digest food and liquid.
- 16. a system of glands that produce hormones.
- 17. an organ system in vertebrates that is part of the circulatory system and the immune system.
Down
- 2. a system that allows movement, structure, and circulation of blood around our body.
- 4. pump blood throughout our body.
- 5. a muscular organ found on the left side of the upper belly that digests food.
- 6. our body’s command center.
- 8. a hormone and drug involved in the regulation of visceral functioning.
- 14. A system that allows us to breathe in the fresh air and let out waste gases.