Across
- 3. Cava, two large veins that return deoxygenated blood from the body into the heart.
- 5. a small-diameter blood vessel in the microcirculation that extends and branches out from an artery and leads to capillaries.
- 6. Valve, to prevent backflow of blood from the right ventricle into the right atrium during right ventricular contraction: systole.
- 10. flaps (leaflets) that act as one-way inlets for blood coming into a ventricle and one-way outlets for blood leaving a ventricle.
- 11. a condition marked by severe pain in the chest, often also spreading to the shoulders, arms, and neck, caused by an inadequate blood supply to the heart.
- 12. a very small blood vessel in the microcirculation that allows blood to return from the capillary beds to drain into the larger blood vessels, the veins.
- 13. a blood vessel that takes blood away from the heart to one or more parts of the body.
- 15. blood vessels that carry blood towards the heart.
- 16. Dioxide, a heavy colorless gas CO 2 that does not support combustion, dissolves in water to form carbonic acid, is formed especially in animal respiration and in the decay or combustion of animal and vegetable matter, is absorbed from the air by plants in photosynthesis, and is used in the carbonation of beverages.
- 17. to diminish into something smaller or ___ in the size or length
- 19. the main and largest artery in the human body, originating from the left ventricle of the heart and extending down to the abdomen, where it splits into two smaller arteries.
- 20. Node, a group of cells located in the wall of the right atrium of the heart.
- 23. Valve, a valve with two flaps in the heart that lies between the left atrium and the left ventricle.
- 24. High pressure in the arteries (vessels that carry blood from the heart to the rest of the body).
Down
- 1. supply, treat, charge, or enrich with oxygen.
- 2. any of the fine branching blood vessels that form a network between the arterioles and venules.
- 4. primary organs of the respiratory system in humans and many other animals including a few fish and some snails.
- 7. (especially of muscles or nerves) concerned in bodily processes that are not under the control of the will.
- 8. one of two large chambers toward the bottom of the heart that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs.
- 9. remove oxygen from.
- 14. Artery, the arterial blood vessel of coronary circulation, which transports oxygenated blood to the heart muscle.
- 18. the upper chamber through which blood enters the ventricles of the heart.
- 21. to get bigger or ______ in size
- 22. Artery, the artery carrying blood from the right ventricle of the heart to the lungs for oxygenation.