Basic Science Exam Module This exam must be completed in 15 minutes. Click here to start the exam Time left: 900 1. Osteoblasts found in callus around a fracture is derived from Endothelial and perithelial cells of invading capillaries Local connective tissue Reticuloendothelial cells local migration from Bone marrow of the exposed medulla Mononuclear white cells derived from fracture hematoma Stem cells in the connective tissue(Question 1 of 10)2. The following factor increases the rigidity of an external fixator except: Increased pin number Half pins separated by 45° Decreased pin group separation Increased diameter of pins Decreased bone-rod distance (Question 2 of 10)3. What is the main component of articular cartilage? proteoglycans lipids water collagen (Question 3 of 10)4. the drug that is known to cause tendinitis and tendon rupture when administered in children? Pencillin Amikacin Rifampicin Ciprofloxacin(Question 4 of 10)5. Changes in articular cartilage resulting from normal aging include all the following except superficial cartilage fibrillations chondrocyte synthetic activity is decreased Increased water concentration Decreased stability of large proteoglycan aggregates Increased crosslinking of collagen(Question 5 of 10)6. What is the predominant collagen of articular cartilage and ligaments respectively? Type III and Type II Type II and Type I Type IV and Type II Type I and type III (Question 6 of 10)7. River water contamination in open fracture leads to increase risk of infection with which of the following organism? Clostridium welchi Eikinella corrodens Pseudomonas Aeuriginosa Treponema pallidum Staphylococcus epidermidis(Question 7 of 10)8. Proteoglycan content is highest in which of the following regions of articular cartilage The zone of calcified cartilate The deep zone The middle zone The subchondral zone The superficial zone (Question 8 of 10)9. Bacterial growth in a biofilm or “slime layer” around an implant may be resistant to antibiotic therapy because of bacterial van Der Waal's forces pH alterations Poor vascular supply Phenotypic changes in surface-adherent bacteria changing their antibiotic susceptibility (Question 9 of 10)10. Bone Morphoenic Protein belongs to which superfamily of molecules? PDGF Collagens TGF-beta VEGF Interferons(Question 10 of 10) Loading ... Get explanatory asnwers from our book, <br /> Post Views: 6,070 Related Posts Basic Science Exam Module 2Get explanatory answers from our book, Hand Surgery Exam ModuleGet explanatory answers from our book, Spine Surgery Exam ModuleGet explanatory answers from our book,
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