Across
- 4. a fluid-filled sac that surrounds and protects your heart
- 6. the largest artery in the human body
- 7. the middle, muscular layer of the heart wall, responsible for the heart's pumping action
- 8. a colorless cell that circulates in the blood and body fluids
- 9. caress oxygen rich blood away from the heart
- 10. two largest veins in the body,
- 12. unique veins that carry oxygenated blood from the lungs back to the heart,
- 13. a type of blood cell responsible for carrying oxygen
- 14. the artery carrying blood from the right ventricle of the heart to the lungs for oxygenation
Down
- 1. thin, smooth membrane which lines the inside of the chambers of the heart
- 2. caress oxygen-depleted blood toward the heart
- 3. fine branching blood vessels that form a network between the arterioles and venules
- 5. another term for platelet
- 9. each of the two upper cavities of the heart
- 11. each of the two main chambers of the heart, left and right.