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






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






3. Cells that don't proliferate (neurons)






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






5. 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.






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






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






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






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






10. ____ are enzymes responsible for protein degradation.






11. Drawback of micromaching






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






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






14. 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.






15. Keloid scars forms because disfuntion of






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






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






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






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






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






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






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






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






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






25. Thrombin activates several upstream factors.






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






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






28. Higher Molecular weight degrades slower than ____ MW






29. Type of fiber drawing that controls details of a polymer by etching on a microscopic level; thus - controlling mechanical properties as well






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






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






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






33. ______ Molecular weight degrades slower than lower MW






34. List two chemical characteristics of polymers:






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






36. The trigger for activation of enzymes (anything but endothelial cells!)






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






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






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






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






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






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






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






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






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






46. Cells that proliferate rapidly (fibroblasts)






47. 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?






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






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






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







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