Across
- 1. the vital fluid circulating in our bodies
- 4. relating to the lungs.
- 5. another term for platelet.
- 6. the yellowish, liquid component of your blood, making up about 55% of its volume, that carries red blood cells, white blood cells
- 7. an irregular heartbeat
- 14. muscular, elastic blood vessels that carry oxygen-rich blood away from the heart to supply oxygen and nutrients to the body's tissues and organs
- 15. the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries.
- 17. a red blood cell that is typically a biconcave disc without a nucleus.
- 18. a one-way valve in the heart that controls blood flow between the right atrium and right ventricle
- 19. System your body's transport network that pumps oxygen
- 20. any of the fine branching blood vessels that form a network between the arterioles and venules.
Down
- 2. a vital part of the immune system that defend the body against infection and disease
- 3. refers to the heart's mitral valve, a two-leaflet valve between the left atrium and left ventricle that controls blood flow
- 6. the membrane enclosing the heart, consisting of an outer fibrous layer and an inner double layer of serous membrane.
- 8. valve a crucial heart valve located between the left ventricle and the aorta
- 9. a hollow part or cavity in an organ
- 10. the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood
- 11. blood vessels that carry deoxygenated blood from the body's tissues back to the heart
- 12. iron-rich protein in red blood cellsatrium
- 13. the muscular tissue of the heart.
- 16. the thin, smooth membrane which lines the inside of the chambers of the heart and forms the surface of the valves
- 21. a dividing wall or partition in anatomy, most commonly referring to the nasal septum