the circulatory system

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Across
  1. 2. they carry blood back from tissues to the heart
  2. 3. a rhythmical throbbing of the arteries
  3. 7. they carry oxygen to the body's tissues
  4. 9. red liquid that circulates in the arteries and veins of human body
  5. 11. they carry blood from the heart to the body's tissues
  6. 13. a bundle of fibrous tissue in a human body
  7. 14. regular movement or sound that the heart makes
Down
  1. 1. they help defend the body against infections
  2. 4. they form a network
  3. 5. muscular organ that pumps the blood through the circulatory system
  4. 6. they are tiny cells needed for blood cotting
  5. 8. it is related to the system that moves blood through the body
  6. 10. they are holding stations for incoming blood
  7. 12. they pumps blood out of the heart