Across
- 4. The system that transports materials to and from cells
- 8. Oxygenated blood travels here via the pulmonary vein
- 10. Serves as a passageway for both air and food at the back of the throat
- 13. Regulate blood flow, help control blood direction
- 14. De-oxygenated blood is returned here by two large veins, the superior vena cava and the inferior vena cava
- 16. The part of the blood that helps with clotting
- 18. Around 55% of your blood, it is the liquid portion
- 19. Oxygenated blood is pumped here and then out of the heart through the aorta
- 20. The part of blood that carries oxygen to the body
- 22. Strong, muscular blood vessels that carry blood away from the heart
- 24. System Provides the body with a fresh supply of oxygen for cellular respiration and removes carbon dioxide (waste product)
- 25. The muscle that helps you breath
- 26. Made of plasma, red blood cells, white blood cells, and platelets
Down
- 1. When the right atrium contracts, blood is pushed through the tricuspid valve to here
- 2. The two large passageways that lead from the trachea to your lungs
- 3. The organ(s) that contain alveoli, bronchi and connective tissue
- 5. The part of the blood that fights infection and disease
- 6. Carry blood back to the heart
- 7. Tiny blood vessels with thin walls that help with gaseous and nutrient exchange
- 9. The internal entry and exit point for air
- 11. The major muscle of the circulatory system
- 12. What connects your pharynx to your lungs
- 15. A piece of skin that covers the trachea when you swallow, preventing food from entering
- 17. Tiny sacks with thin membranes surrounded by capillaries, where gaseous exchange occurs
- 21. Passes air over your vocal cords so you can speak
- 23. The bronchi are further subdivided into these. Alveoli are found on their ends