Anatomy and physiology revision

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Across
  1. 5. the inner most covering of the heart
  2. 9. part of the conducting airways that are not involved in gas exchange
  3. 10. where the coronary arteries originate
  4. 11. cardiac valves open and close based on this
  5. 12. reduces the surface tension in the alveoli
  6. 13. this structure secretes a small amount of fluid to reduce friction
  7. 14. main muscle involved in breathing
  8. 16. these stimulate other cardiac muscle cells (2 words, no space between words)
  9. 17. a hormone that stimulates the bone marrow to produce RBC
  10. 19. the structure in the kidney that allows filtration of fluid and small molecules
  11. 20. one of the structures in the upper respiratory system
  12. 21. the urine forming organ
  13. 24. considered the functional unit of the kidney
  14. 25. these structures contain valves to aid in the return of blood to the heart
Down
  1. 1. the transport system of the cardiovascular system
  2. 2. the amount of air moved in and out of the lung with each normal breath (2 words, no space between words)
  3. 3. muscle that contracts during voiding
  4. 4. the second phase of urine formation (2 words, no space between word)
  5. 6. one of the atrioventricular valves (2 words, no space between)
  6. 7. the coronary arteries fill during ....
  7. 8. the primary function of the respiratory system (2 words, no space between words)
  8. 15. the term used to describe the contraction of the heart muscle
  9. 18. this lung has 3 lobes
  10. 22. initiates the renin-angiotensin-adosterone pathway
  11. 23. blood flow is calculated based on the following way