Across
- 5. a blood vessel that carries blood back to the heart: has a relatively thin wall and contains valves
- 7. a tissue that lines the inside of a structure , such as the inner surface of a blood vessel.
- 8. to keep the blood flowing in the right direction; these allow blood to move towards the heart but not away from it.
- 10. Running vertically on the right-hand side of the heart are the two large veins, one brining blood downwards from the head and the other bringing it up-wards from the rest of the body.
- 13. circulation that supplies blood to all the body except to the lungs
- 17. the smallest type of blood vessel, whose function d to facilitate exchange of substances between the blood and the tissues
- 18. The transport system of the body responsible for carrying oxygen and nutrients to the body and carrying away carbon dioxide and other wastes; composed of the heart, blood vessels, and blood.
- 19. the combination of pulmonary circulation and systemic circulation makes this.
- 20. a blood vessel that carries blood away from the heart
Down
- 1. blood is pumped out of the right ventricle into these, which carry blood to the lungs
- 2. maintaining a a relatively constant environment for the cells within the body
- 3. These branch from the aorta, and deliver oxygenated blood to the walls of the heart itself.
- 4. the larger veins that run just beneath the collar bone
- 6. The large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body.
- 9. the muscular tissue of the heart.
- 11. blood is pumped out of the right ventricle into the pulmonary arteries, which carry it to the lungs.
- 12. arteries, veins, & capillaries
- 14. as blood leaves a capillary bed, the capillaries gradually join with one another, forming larger vessels called _______. These join to form veins.
- 15. bring blood back to the heart from the left and right lungs
- 16. small blood vessels that carry blood from arteries to capillaries