Covid-19 comprehension crossword

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Across
  1. 4. cells that line the blood vessels.
  2. 5. the transportation system for the virus around the body
  3. 8. ACE-2 are a type of?
  4. 10. provides the lungs with O2 when someone is infected
Down
  1. 1. irregular heart rhythm
  2. 2. when blood supply to the brain is interrupted.
  3. 3. a hard swelling made of a fatty deposit,Ca & fibrous tissue
  4. 6. a lifestyle choice increasing the risk of infection
  5. 7. the additional protein required to open the Covid-19 virus
  6. 9. a drug being used to treat the virus