1. A 12-year old boy falls down and complains of abdominal pain. At the hospital he...

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Medical Sciences

1. A 12-year old boy falls down and complains of abdominalpain. At the hospital he is suspected to have sustained injury tohis liver causing bleeding into the peritoneal cavity. At surgery,part of his liver is removed because of injury. Six months later, aCT scan shows that his liver has almost returned to its normalsize. State with explanation the process responsible for the CTfinding?
2. A 12-year old boy developed sore throat and fever.Examination of his throat showed redness and swelling. Laboratoryexamination showed a high neutrophil count. He was given aspirinand within 6 hours he was better.
Discuss the mechanisms responsible for the variousobservations in this boy. Explain the change in his conditionfollowing administration of aspirin.
3. A 32-year-old driver is involved in a motor accident and isbrought to the hospital. The examining doctor found a very rapidbut weak pulse. The blood pressure was 60 mmHg systolic withun-recordable diastolic pressure. An abdominal tap indicatedbleeding into the peritoneal cavity.
Name the condition this driver has got and define it. Describethe pathogenesis of this condition.
4. A lorry driver is involved in an accident and sustains alarge wound on the thigh. Describe the processes involved in thehealing of this wound and the factors that may hinder or promotethe process. What complications may arise from healing of thiswound?

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Question no 1 Liver regeneration is the process by which the liver is able to replace lost liver tissue from growth from the remaining tissue The liver is the only visceral organ that possesses the capacity to regenerateThe liver can regenerate after either surgical removal or after chemical injury It is known that as little as 51 of the original liver mass can regenerate back to its full sizeThe process of regeneration in mammals is mainly compensatory growth because only the mass of the liver is replaced not the shapeHowever in lower species such as fish both liver size and shape can be replaced Mechanism There are two events in which the liver has the capability to regenerate one being a partial hepatectomy and the other being damage to the liver by toxins or infection The See Answer

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