Across
- 3. having the hemoglobin in the reduced state
- 6. artery an artery that conveys venous blood from the heart to the lungs
- 8. a chamber of the heart which receives blood from a corresponding atrium and from which blood is forced into the arteries
- 9. a valve of three flaps that prevents reflux of blood from the right ventricle to the right atrium
- 10. when body temperature returns to normal from being too cold, what happens to the act of shivering?
- 13. any of the large veins by which in air-breathing vertebrates the blood is returned to the right atrium of the heart
- 15. a minute thin-walled vessel of the body
- 18. the chamber or either of the chambers of the heart that receives blood from the veins and forces it into the ventricle or ventricles
- 19. SINUS NODE
- 20. any of the tubular branching vessels that carry blood from the capillaries toward the heart
Down
- 1. constitute the basic respiratory organs of an air-breathing vertebrate
- 2. to impregnate, combine, or supply (something, such as blood) with oxygen
- 4. abnormally high blood pressure and especially arterial blood pressure
- 5. when intensity increases, what happens to respiratory rate?
- 7. a valve of two flaps that prevents fluid to flow back from the left ventricle to the left atrium
- 11. a bodily structure that closes temporarily a passage or orifice or permits movement of fluid in one direction only
- 12. any of the tubular branching muscular- and elastic-walled vessels that carry blood from the heart through the body
- 14. a severe inflammatory or ulcerated condition of the mouth or throat
- 16. the great arterial trunk that carries blood from the heart to be distributed by branch arteries through the body
- 17. dioxide formed especially in animal respiration