The Circulatory System

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Across
  1. 3. together, these two makes up the atria. These are the receiving chambers of the heart.
  2. 6. it is the heart wall; it separates the two sides (left and right) of the heart
  3. 7. are blood vessels that carry oxygen rich blood AWAY from the heart.
  4. 9. are tiny blood vessels as thin or thinner than the hairs on your head.
  5. 11. carry blood back toward your heart.
  6. 12. the largest artery in the body; this sends blood to all tissues in the body
Down
  1. 1. is the liquid part of the blood.
  2. 2. system it is one of the transport systems of the human body that is composed of the heart, the blood and the blood vessels.
  3. 4. parts of the heart that act like doors; these are flaps of tissues that open and close allowing blood to flow only in one direction.
  4. 5. these have thicker and more muscular walls than the atria because these are the pumping chambers which are responsible for keeping the blood moving.
  5. 8. is a muscle that pumps blood to the different parts of the body; it is the pump of the circulatory system
  6. 10. are blood cells that help stop bleeding.