Human Body

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Across
  1. 2. Lower part of the brain that controls balance and movement
  2. 6. The squeezing motion done by the esophagus and other parts of the digestive system that pushes food through
  3. 8. Blood vessel that carries blood away from the heart - usually has thick walls and is strong
  4. 9. A column of nerve tissue that runs from the base of the skull to the middle of the back
Down
  1. 1. The lowest part of the brain that controls vital functions such as breathing, heart rate, and blood pressure
  2. 3. A biomolecule that speeds up chemical reactions
  3. 4. Blood vessels with walls so thin that oxygen and CO2 molecules can slip through
  4. 5. Blood vessel that brings blood back to the heart for a visit - usually thin with weak walls
  5. 6. Relating to the lungs
  6. 7. Any of the many tiny air sacs of the lungs which allow for rapid gaseous exchange