D.Hemosiderosis E.Lipofuscin deposition 43.A 16 year-old boy sustained blunt trauma to the abdomen when the vehicle he was driving struck a bridge abutment at high speed.Peritoneal lavage(washing the peritoneal cavity with saline)showed a hemoperitoneum (blood in the abdominal cavity),and at laparotomy (surgical exploration of the abdomen),a small port the Several left lobe of the liv was removed be of the later, scan of the abdomen shows that the liver is nearly normal in size again.Which of the following processes best explains this phenomenon?( A.Apoptosis C.Fatty change D.Hydropic change E.Hyperplasia 44.Which of the following statements is correet?( A.Autophagy is a rare process that is alw ciated with dis B.Autophagy is important in cellular defense against microorganisms C.Autophagy is not involved in cellular differentiation. D.The autophagic vacuole fuses with a lysosome to form an autophagolysosome. E.The autophagic vacuole is formed by mitochondria. 45.A63-year-old man develops worsening congestive heart failure I month afte an acute mvocardial infarction.An echocardiogram shows a markedly decreased ejection fraction.He dies six weeks after his acute myocardial infarct.At autopsy, a section of the infarct shows that the necrotic mvocardium has largely been capillaries,fibroblasts,and collager Which of the following natory cell types plays the most important role in the healing process by removing debris?( A.Eosinophils B.Lymphocytes D.Neutrophil E.Plasmacytes 46.While shaving one morning,a 23-year-old man nicks his lip with a razor. Seconds after the injury,the bleeding stops.Which of the following mechanisms is most likely to reduc e blood loss from a small dermal vein?( A.Fibrin poly eriza 10n B.Neutrophil chemotaxis C.Platelet aggregation D.Protein C activation D. Hemosiderosis E. Lipofuscin deposition 43. A 16 year-old boy sustained blunt trauma to the abdomen when the vehicle he was driving struck a bridge abutment at high speed. Peritoneal lavage (washing the peritoneal cavity with saline) showed a hemoperitoneum (blood in the abdominal cavity), and at laparotomy (surgical exploration of the abdomen), a small portion of the left lobe of the liver was removed because of the injury. Several weeks later, a CT scan of the abdomen shows that the liver is nearly normal in size again. Which of the following processes best explains this phenomenon? ( ) A. Apoptosis B. Dysplasia C. Fatty change D. Hydropic change E. Hyperplasia 44. Which of the following statements is correct? ( ) A. Autophagy is a rare process that is always associated with disease. B. Autophagy is important in cellular defense against microorganisms. C. Autophagy is not involved in cellular differentiation. D. The autophagic vacuole fuses with a lysosome to form an autophagolysosome. E. The autophagic vacuole is formed by mitochondria. 45. A 63-year-old man develops worsening congestive heart failure 1 month after an acute myocardial infarction. An echocardiogram shows a markedly decreased ejection fraction. He dies six weeks after his acute myocardial infarct. At autopsy, a section of the infarct shows that the necrotic myocardium has largely been replaced by capillaries, fibroblasts, and collagen. Which of the following inflammatory cell types plays the most important role in the healing process by removing debris? ( ) A. Eosinophils B. Lymphocytes C. Macrophages D. Neutrophils E. Plasmacytes 46. While shaving one morning, a 23-year-old man nicks his lip with a razor. Seconds after the injury, the bleeding stops. Which of the following mechanisms is most likely to reduce blood loss from a small dermal vein? ( ) A. Fibrin polymerization B. Neutrophil chemotaxis C. Platelet aggregation D. Protein C activation