新世纪综合教程1unit3 新世纪医学英语教程(生物医学)课后翻译答案unit1-5.doc

新世纪综合教程1unit3 新世纪医学英语教程(生物医学)课后翻译答案unit1-5 导读：就爱阅读网友为您分享以下“新世纪医学英语教程(生物医学)课后翻译答案unit1-5”资讯，希望对您有所帮助，感谢您对92的支持! Reading A 1 1.细胞的专化程度越高，失去有丝分裂能力的可能性越大。神经元是体内分化程度最高的，一旦神经系统的发育得以完成，它们就失去了分裂和繁殖的能力。 2.在此情况下，体内有属于同一谱系的母细胞，这些细胞尚未分化到失去分裂能力的程度。它们已经得到充分的分化，因而它们产生的子细胞限定于同一细胞体系；但尚未分化到丧失积极增生潜力的程度。 Reading B 1 1.Normally, the rate of cell reproduction and the process of cell differentiation are precisely controlled so that both of these mechanisms cease once the appropriate numbers and type of cell are formed. 2.Cell walls are very thin so that oxygen and carbon dioxide can easily get through. 3.Many cells, especially those of the central nervous system and the heart, are extremely sensitive to low blood levels of oxygen results in serious damage. 4.The undifferentiated stems cells that can be triggered to enter the cell cycle are different from the cells that continue to divide and reproduce. 5.In the blood there are many red blood cells that serve as vehicles for carrying oxygen. 6.Besides neurons, there are other well-differentiated cells that are unable to divide. Reading A 2 1. 虽然发炎的影响因其令人不快和造成不适而常被认为是不好的，但发炎过程就其实质而言对人体却是有利的，它使人能应付日常压力的影响。 2 .小小一块局部红肿就足以防止蚊叮产生伤害，而严重的情况 ，如阑尾炎，则可引起发烧、白细胞增多，乃至大量体液和蛋白质聚集到炎症部位。 Reading B 2 1.Although all pathogens pose potential threats if they gain entry to the body, the chances of this occuring are actually quite small. 2.Although pain is often not considered an actual body defense mechanism, the role of pain in the body’s response to invasion can not be ignored. 3.Referred pain means that the pain can be present in a given place although the source may be elsewhere. 4.As the process continues, monocytes exit the blood and mature into macrophages in the tissue environment. 5.As body temperature rises, the body is stimulated to produce more white blood cells. 6.As your body produces its own antibodies, you will not have to worry about subsequent exposure to the disease. Reading A 3 1 晶状体中心浑浊可能隔断视轴，造成可见到两个或多个模糊视象的视觉缺损。在进行眼底镜检查时，白内障可表