full transcript

From the Ted Talk by Alex Gendler: How do ventilators work?

Unscramble the Blue Letters

To appreciate the value of ventilation, we need to understand how the respiratory system works. We breathe by contracting our diaphragms, which expands our chest cvatieis. This allows air to be drwan in, inflating the alveoli— millions of small sacs inside our lungs. Each of these tiny balloons is surrounded by a mesh of blood-filled cllipriaaes. This blood absorbs oxygen from the inflated alelovi and leaves behind corban dioxide. When the diaphragm is relaxed, the CO2 is exhaled alongside a mix of oxegyn and other gases.

Open Cloze

To appreciate the value of ventilation, we need to understand how the respiratory system works. We breathe by contracting our diaphragms, which expands our chest ________. This allows air to be _____ in, inflating the alveoli— millions of small sacs inside our lungs. Each of these tiny balloons is surrounded by a mesh of blood-filled ___________. This blood absorbs oxygen from the inflated _______ and leaves behind ______ dioxide. When the diaphragm is relaxed, the CO2 is exhaled alongside a mix of ______ and other gases.

Solution

  1. cavities
  2. carbon
  3. oxygen
  4. drawn
  5. alveoli
  6. capillaries

Original Text

To appreciate the value of ventilation, we need to understand how the respiratory system works. We breathe by contracting our diaphragms, which expands our chest cavities. This allows air to be drawn in, inflating the alveoli— millions of small sacs inside our lungs. Each of these tiny balloons is surrounded by a mesh of blood-filled capillaries. This blood absorbs oxygen from the inflated alveoli and leaves behind carbon dioxide. When the diaphragm is relaxed, the CO2 is exhaled alongside a mix of oxygen and other gases.

Frequently Occurring Word Combinations

ngrams of length 2

collocation frequency
respiratory system 3
positive pressure 2
negative pressure 2
pressure ventilation 2
pressurized air 2

Important Words

  1. absorbs
  2. air
  3. alveoli
  4. balloons
  5. blood
  6. breathe
  7. capillaries
  8. carbon
  9. cavities
  10. chest
  11. contracting
  12. diaphragm
  13. diaphragms
  14. dioxide
  15. drawn
  16. exhaled
  17. expands
  18. gases
  19. inflated
  20. inflating
  21. leaves
  22. lungs
  23. mesh
  24. millions
  25. mix
  26. oxygen
  27. relaxed
  28. respiratory
  29. sacs
  30. small
  31. surrounded
  32. system
  33. tiny
  34. understand
  35. ventilation
  36. works