Circulatory System

2. space in the heart that leads blood to and from heart and lungs.
4. any of the kinds of cells normally found circulating in the blood
5. each of the two upper cavities of the heart from which blood is passed to the ventricles
7. relatany of the kinds of cells normally found circulating in the blooding to the lungs
9. a small colorless disk-shaped cell fragment without a nucleus, found in large numbers in blood and involved in clotting
12. a hollow part or cavity in an organ, in particular
13. each of the pair of organs situated within the rib cage, consisting of elastic sacs with branching passages into which air is drawn, so that oxygen can pass into the blood and carbon dioxide be removed
14. any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart
15. less technical term for leukocyte

1. relating to or denoting the arteries that surround and supply the heart
2. movement to and fro or around something, especially that of fluid in a closed system
3. the red liquid that circulates in the arteries and veins of humans and other vertebrate animals, carrying oxygen to and carbon dioxide from the tissues of the body
6. a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation
8. less technical term for erythrocyte
10. any of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body.
11. the colorless fluid part of blood, lymph, or milk, in which corpuscles or fat globules are suspended.
12. a duct or canal holding or conveying blood or other fluid