Across
- 1. tubes that carry oxygen depleted blood towards the heart
- 5. one of two large chambers that collect and expel blood received from an atrium
- 7. another word for heart
- 8. main artery/it passes over the heart from the left ventricle and runs down in front of the backbone
- 9. one of the two blood collection chambers of the heart
Down
- 1. controls blood flow to and from heart
- 2. muscular walled tubes in which blood is carried form the heart to all parts of the body
- 3. either of two large veins by which the blood is returned to the right atrium of the heart
- 4. separates the two upper chambers (the right and left atria) of the heart
- 6. the smallest of blood vessels