Across
- 3. The __________ artery carries blood from the heart to the lungs
- 6. Rate Measure of the number of heartbeats per minute
- 7. are Tiny blood vessels where the exchange of nutrients and oxygen occurs
- 8. The movement of blood through the body
Down
- 1. A structure that ensures blood flows in one direction in the heart
- 2. The lower chambers of the heart
- 3. The rhythmic beating or throbbing of the heart
- 4. One of the upper chambers of the heart
- 5. The largest __________ in the human body
- 6. is the main function of the heart.