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Bio Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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






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






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






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






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






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






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






8. Keloid scars form due to disfunction of ____.






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






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






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






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






13. 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.






14. Cells that proliferate rapidly (fibroblasts)






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






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






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






18. Higher Molecular weight degrades slower than ____ MW






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






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






21. Drawback of micromaching






22. ____ is the process by which cells involved in inflammation internalize and destroy foreign material.






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






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






25. ____ binds to anti- thrombin III (thrombin inhibitor) and increases its potency 1000- fold.






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






27. 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.






28. List two chemical characteristics of polymers:






29. ____ are enzymes responsible for protein degradation.






30. Thrombin also activates protein C-- which deactivates earlier factors in the cascade is known as ___ ___.






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






32. 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.






33. The two types of white blood cells:






34. 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?






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






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






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






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






39. ____ grafts are derived from the other humans.






40. Thrombin activates several upstream factors.






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






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






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






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






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






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






47. High conductivity - isotropic - crystalline






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






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






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







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