Across
- 5. smallest blood vessels
- 6. this is called the triple vaccine
- 7. ______ vein brings clean blood from the lungs into the heart
- 9. the heart makes audible sounds due to the closure of
- 10. the first discovered organelle
Down
- 1. part of human eye controls the amount of light entering the eye
- 2. the branch of medicine involving synthetic chemical compounds
- 3. name of sugar found in milk
- 4. number of eyes found in earthworm
- 8. organ system in which the brain is a part is _______ system