Ch. 4 Vocab

1234567891011121314
Across
  1. 4. / A push or pull.
  2. 6. / A group of cells located in the right atrium that sens out signals that make the heart muscle contract and that regulates heartbeat rate.
  3. 8. / An instrument that measures blood pressure.
  4. 10. / A blood vessel that carries blood away from the heart.
  5. 12. / A blood vessel that carries blood back to the heart.
  6. 13. / Each of the two lower chambers of the heart that pumps blood out of the heart.
  7. 14. / The process by which molecules move from an area in which they are highly concentrated to an area in which they are less concentrated.
Down
  1. 1. / The largest artery in the body.
  2. 2. / A disorder in which a person's blood pressure is consistently higher than normal.
  3. 3. / The force that something exerts over a given area.
  4. 5. / A tiny blood vessel where substances are exchanged between the blood and the body cells.
  5. 7. / Each of the two upper chambers of the heart that receives blood that comes into the heart.
  6. 9. / A condition in which an artery wall thickens as a result of fatty materials.
  7. 11. / A hollow, muscular organ that pumps blood throughout the body.
  8. 12. / A flap of tissue in the heart or a vein that prevents blood from flowing backwards.