Body Systems
Across
- 4. Air enters the respiratory system through the nose or ________.
- 6. A group of hard organs found in the oral cavity.
- 9. a short loop from the heart to the lungs and back again.
- 10. sends blood throughout our bodies, carrying oxygen to every cell.
- 12. It supports the upper body’s weight; provides posture while allowing for movement and flexibility; and protects the spinal cord.
- 13. The network of nerve cells and fibers which transmits nerve impulses between parts of the body.
- 15. The brain and the spinal cord.
- 17. underneath the middle of the forebrain, acts as a master coordinator for all the messages going in and out of the brain to the spinal cord.
- 18. Is controlled by a system of electrical signals in the heart.
- 19. The muscular system’s main function.
- 20. Allows us to breathe.
- 21. Lines the inside of blood vessels and organs, such as the stomach, and is also known as visceral muscle.
Down
- 1. An organ system consisting of skeletal, smooth and cardiac muscles.
- 2. The only muscles that can be consciously controlled.
- 3. Protects the all-important brain and supports the other soft tissues of the head.
- 5. An organ system that permits blood to circulate and transport nutrients, oxygen, carbon dioxide, blood cells, etc.
- 7. Hollow areas between the bones in your head that help regulate the temperature and humidity of the air you inhale.
- 8. The largest and most complex part of the brain.
- 11. Provides the structural support for the human body and protects our organs.
- 14. Two organs that remove oxygen from the air and pass it into your blood.
- 15. Located only in the heart.
- 16. Carries blood from the heart to all the other parts of the body and back again.