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Bio Engineering

Subject : engineering
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.

2. ____ grafts are derived from the other humans.

3. The calculation of a polymer's molecular weight (weight average and number number average) is based upon values for ____ and ___.

4. Relative to free radical polymerization - condensation polymerization generally produces polymer of relatively ____ molecular weight.

5. What type of materials are used for photolithography? (substrate is a silicon wafer - built up material is some _____ ____ )

6. Cell found in the lining of the blood vessels that release heparin and are a part of the negative feedback system.

7. Resulting from the build up of too much collagen at the surface of injury during the granulation tissue stage of proliferation

8. Thrombin activates several upstream factors.

9. Enzymes (proteins) are not activated only when they are in contact with this type of cells

10. Process that makes long fibers (fiber drawing) by forcing a fluid through an oriface.

11. Damaged cells at the site of injury (mast cells) release ___ (glycosaminoglycan).

12. Process of producing new blood vessels due to a lack on oxygen and thus inducing VEGF.

13. During granulation stage of proliferation - growth factors that produce this ____(answer)_____ that function in degrading fibrin and replacing it with collagen.

14. Higher Molecular weight degrades slower than ____ MW

15. Classify the following polymers into appropriate families based on their bond structure i.e. the polymer is an example of poly ____.

16. ____ describes the ability of a device to function appropriately in the presence of blood.

17. Is directed cell migration in response to a concentration gradient of soluble molecules.

18. The fatigue limit is value of applied stress below which a material will not fail no matter the number of ____ applied.

19. Cells that don't proliferate (neurons)

20. Vascular endothelial growth factor is produced in response to ___ and stimulates ___.

21. A ____ implant is designed to elicit specific - intended to host responses.

22. This type of feedback creates

23. Addition polymerization is commonly initiated by ___ - atoms that have an unpaired electron.

24. High conductivity - isotropic - crystalline

25. Where are the tissue factors found when they're inactivated

26. A condensation polymerization results with an ester bond between two reactants and this comes off as a result

27. List two chemical characteristics of polymers:

28. Polyethylene oxide grafting to biomaterials was developed to prevent coagulation by interfering with/preventing ___ ___.

29. The process of calibration establishes a quantitative relationship between ____ __ ___ _____ and the direct output of the intstrument (for example time/volume in GPC).

30. Mast cells release this

31. Two things needed in the end product of the creation of a scab

32. Activates tissue factors aka endothelial damage

33. The glass transition temperature of a poymer at which a polymer transforms from a ____ state to a ___ state.

34. Condition in which patients can literally bleed to death.

35. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure

36. ____ are enzymes responsible for protein degradation.

37. The fibrous capsule surrounding a permanent implant is primarily composed of ___ cells and ____ (matrix).

38. Cardiac bypass surgery in which a vein from a patient's leg is transplanted to the patient's heart is an example of the us of ____ tissue.

39. Collagen ____ is responsible for the gradual gain in mechanical properties of wounded tissue between roughly 4 and 52 weeks post- injury.

40. No healing of damage neurons is the result of ____ cells that are not able to ____.

41. Are polymer additives used to lower glass transition temperature temperature.

42. Enzyme that really gets the polmerization going!

43. The two types of white blood cells:

44. Rather than randomly moving - moves in a directed cell migration manner for specific functions.

45. Which of polyermization (condensation/free radical) would you choose to obtain a polymer of high molecular weight?

46. Cells that proliferate slowly over time (aka liver)

47. The formation of rust due to corrosion in the body is due to the reaction between these 3 things ____ - ____ - and ____ .

48. This cleaves into fibrinogen which creates fibrin (a sticky enzyme that allows blood to clot)

49. Foreign body giants cells are produced by fusion of ___.

50. The fatigue limit is the ___ below which the material can withstand an infinite number of cycles without failure.