Across
- 4. structures located within the heart that regulate blood flow between the heart's chambers
- 5. any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart.
- 6. relating to the heart
- 8. any of the muscular-walled tubes forming part of the circulation system by which blood is taken to all parts of the body via the heart
- 9. each of the two upper cavities of the heart from which blood is passed to the ventricles
Down
- 1. any of the fine branching blood vessels that form a network between the arterioles and venules.
- 2. an artificial device for stimulating the heart muscle and regulating its contractions.
- 3. each of the two main chambers of the heart, left and right
- 4. a vein
- 7. a partition separating two chambers, such as that between the nostrils or the chambers of the heart.
- 8. the main artery of the body, supplying oxygenated blood to the circulatory system