Basic Science Exam Module This exam must be completed in 15 minutes. Click here to start the exam Time left: 900 1. Proteoglycan content is highest in which of the following regions of articular cartilage The middle zone The superficial zone The deep zone The subchondral zone The zone of calcified cartilate (Question 1 of 10)2. River water contamination in open fracture leads to increase risk of infection with which of the following organism? Treponema pallidum Clostridium welchi Eikinella corrodens Staphylococcus epidermidis Pseudomonas Aeuriginosa(Question 2 of 10)3. The following factor increases the rigidity of an external fixator except: Increased diameter of pins Decreased pin group separation Increased pin number Half pins separated by 45° Decreased bone-rod distance (Question 3 of 10)4. What is the predominant collagen of articular cartilage and ligaments respectively? Type I and type III Type IV and Type II Type II and Type I Type III and Type II (Question 4 of 10)5. the drug that is known to cause tendinitis and tendon rupture when administered in children? Pencillin Amikacin Rifampicin Ciprofloxacin(Question 5 of 10)6. Osteoblasts found in callus around a fracture is derived from local migration from Bone marrow of the exposed medulla Stem cells in the connective tissue Local connective tissue Reticuloendothelial cells Endothelial and perithelial cells of invading capillaries Mononuclear white cells derived from fracture hematoma(Question 6 of 10)7. 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 Phenotypic changes in surface-adherent bacteria changing their antibiotic susceptibility Poor vascular supply pH alterations(Question 7 of 10)8. Bone Morphoenic Protein belongs to which superfamily of molecules? VEGF TGF-beta Interferons PDGF Collagens(Question 8 of 10)9. What is the main component of articular cartilage? lipids proteoglycans water collagen (Question 9 of 10)10. 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 10 of 10) Loading ... Get explanatory asnwers from our book, <br /> Post Views: 5,944 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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