full transcript

From the Ted Talk by Sajan Saini: How light technology is changing medicine

Unscramble the Blue Letters


Light, it tunrs out, can help probe the insides of our bodies.

Consider that medical fingerclip— it’s called a pulse oximeter. When you inhale, your lungs tnaserfr oxygen into hemoglobin molecules, and the pulse oximeter measures the ratio of oxygenated to oxygen-free hemoglobin. It does this by using a tiny red LED light on one side of the fingerclip, and a small light detector on the other.

When the LED sehins into your feginr, oxygen-free hemoglobin in your blood vessels absorbs the red light more strongly than its oxygenated counterpart. So the amount of lgiht that makes it out the other side depends on the concentration rtaio of the two tepys of hmlioeobgn.

Open Cloze


Light, it _____ out, can help probe the insides of our bodies.

Consider that medical fingerclip— it’s called a pulse oximeter. When you inhale, your lungs ________ oxygen into hemoglobin molecules, and the pulse oximeter measures the ratio of oxygenated to oxygen-free hemoglobin. It does this by using a tiny red LED light on one side of the fingerclip, and a small light detector on the other.

When the LED ______ into your ______, oxygen-free hemoglobin in your blood vessels absorbs the red light more strongly than its oxygenated counterpart. So the amount of _____ that makes it out the other side depends on the concentration _____ of the two _____ of __________.

Solution


  1. types
  2. ratio
  3. light
  4. hemoglobin
  5. shines
  6. turns
  7. finger
  8. transfer

Original Text


Light, it turns out, can help probe the insides of our bodies.

Consider that medical fingerclip— it’s called a pulse oximeter. When you inhale, your lungs transfer oxygen into hemoglobin molecules, and the pulse oximeter measures the ratio of oxygenated to oxygen-free hemoglobin. It does this by using a tiny red LED light on one side of the fingerclip, and a small light detector on the other.

When the LED shines into your finger, oxygen-free hemoglobin in your blood vessels absorbs the red light more strongly than its oxygenated counterpart. So the amount of light that makes it out the other side depends on the concentration ratio of the two types of hemoglobin.

Frequently Occurring Word Combinations


ngrams of length 2

collocation frequency
blood vessels 3
chemical fingerprint 3
plastic clip 2
oxygen level 2
pulse oximeter 2
led light 2
light detector 2
infrared light 2
absorb light 2
chemical fingerprinting 2
human saliva 2


Important Words


  1. absorbs
  2. amount
  3. blood
  4. bodies
  5. called
  6. concentration
  7. counterpart
  8. depends
  9. detector
  10. finger
  11. fingerclip
  12. hemoglobin
  13. inhale
  14. insides
  15. led
  16. light
  17. lungs
  18. measures
  19. medical
  20. molecules
  21. oximeter
  22. oxygen
  23. oxygenated
  24. probe
  25. pulse
  26. ratio
  27. red
  28. shines
  29. side
  30. small
  31. strongly
  32. tiny
  33. transfer
  34. turns
  35. types
  36. vessels