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

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

3. GPC separates molecules on the basis of size by their passage over a column packed with a porous matrix. ___ molecules pass through the column more quickly.

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

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

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

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

8. List two chemical characteristics of polymers:

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

10. The two types of white blood cells:

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

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

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

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

15. Deformation that cannot be recovered once the load is removed from the material is ____ deformation.

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

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

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

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

20. Mast cells release this

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

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

23. ____ is a measurement that characterizes the breadth of the distribution of a polymer's molecular weight.

24. 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.

25. Enzyme that really gets the polmerization going!

26. ____- are polymers that can be repeatedly softened by heating and hardened by cooling.

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

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

29. Cells that proliferate rapidly (fibroblasts)

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

31. Higher Molecular weight degrades slower than ____ MW

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

33. You're working on a square polymeric implant of 5cm length and 2mm thick. You've been asked to suggest a precise way to fabricate it - what would you suggest?

34. A molecular pathway in which the product of each reaction catalyzes the subsequent reaction.

35. Neutrophils remove bacteria/damaged cell debris from a wound site through the process of ___.

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

37. What types of wound healing results from injury with inflammation?

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

39. Disfunction of _____ (cells) producing collagenase during the _____ phase of wound healing may form Keloid scars.

40. Cells that don't proliferate (neurons)

41. ______ Molecular weight degrades slower than lower MW

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

43. Essentially all metallic biomaterials are ____ - comprised of two or more metals. One of these metals is selected for its ability to support _____ - the formation of a stable oxide layer that resists further corrosion.

44. In order to produce a blood clot - thrombin cleaves/activates ____ and ____.

45. High conductivity - isotropic - crystalline

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

47. This type of feedback creates

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

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

50. _____ establishes a quantitative relationship between measured output values from an instrument and known standards of what is being measured.