CIRCULATORY, IMMUNE, & EXCRETORY SYSTEMS

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Across
  1. 1. THE CLEAR LIQUID PART OF BLOOD.
  2. 6. BEAN-SHAPED ORGANS THAT FILTER WASTES OUT OF THE BLOOD.
  3. 11. LOWER CHAMBERS OF THE HEART.
  4. 13. THINNEST KIND OF BLOOD VESSEL.
  5. 15. BLOOD VESSELS THAT CARRY BLOOD AWAY FROM THE HEART.
  6. 17. THE MAIN ORGAN OF THE CIRCULATORY SYSTEM.
  7. 18. A BARRIER OR ENTRY BETWEEN CHAMBERS IN THE HEART.
  8. 19. PART OF THE KIDNEY WHERE WASTES ARE FILTERED OUT OF THE BLOOD.
  9. 20. SOMETHING THE BODY USES TO KEEP GERMS OUT OF THE NOSE, EYES, OR MOUTH.
Down
  1. 2. SPECIAL MOLECULES PRODUCED BY WHITE BLOOD CELLS TO TARGET GERMS.
  2. 3. TUBE THAT CARRIES URINE FROM THE BLADDER TO OUTSIDE THE BODY.
  3. 4. ORGAN THAT HOLDS URINE.
  4. 5. WASTE AND WATER PRODUCED IN THE KIDNEYS.
  5. 7. SYSTEM THAT PROTECTS AGAINST GERMS.
  6. 8. TYPE OF BLOOD CELLS THAT FIGHT GERMS AND DISEASES.
  7. 9. UPPER CHAMBERS OF THE HEART.
  8. 10. SMALL PIECES OF CELLS THAT CLOT OR SCAB WHEN THERE'S A CUT.
  9. 12. TUBES THAT CARRY URINE TO THE BLADDER.
  10. 14. MAIN ARTERY TO THE BODY.
  11. 16. WASTE THAT LEAVES THROUGH THE SKIN.