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人教版七年级生物下册复习总提纲_百度文库_20140604_203232(Peoples teaching edition of the seventh grade biology book review general outline _ baidu library _20140604_203232).doc

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人教版七年级生物下册复习总提纲_百度文库203232(Peoples teaching edition of the seventh grade biology book review general outline _ baidu library 203232) The first full course coursework is a summary of the history geography of Chinese mathematical English. ????? The revision of the master edition of the book is a summary of the revision of the book. The seventh grade biology book?? The man in the biosphere? 6? ? Cardiac function: the organ of the blood circulation? Heart structure:? ?????????????? Lower chamber downward; The left and right rooms are not connected - there is a gutter and a room. The room was connected with the venous chamber. The stator room cant move backwards -- has the artery? 2)? Blood circulation? (1) concept and approach of blood circulation:? Concept: circulatory flow of blood in a pipeline composed of the heart and all vessels. ? Divided into systemic circulation and pulmonary circulation:? ??????????????? What is the difference between the arterial and the venous blood (according to the amount of oxygen)? (1)? Arterial blood: oxygen-rich, bright red blood??? Venous blood: low oxygen, dark red blood? (2) initial nursing of bleeding:? Capillary bleeding: blood is red, natural hemostatic, should be disinfected; ? Arterial hemorrhage: blood color is bright red, blood flow is very urgent, in the injured artery near the heart end to stop bleeding; ? Venous hemorrhage: the blood is dark red, the blood flow is relaxed, and the blood is stopped at the distal end of the injured vein. ? 4 blood transfusion and blood volume? ?? 1)? Blood type discovery: in 1900, landsteiner discovered ABO blood type? 2) blood: 7 to 8 percent of your body weight? ?? 3) blood transfusion: type A, B, AB and O. ???? Blood transfusion: in principle all blood types can be typed with a small amount of type O blood. Type AB can accept a small amount of blood transfusion. ? Atrial? Ventricular? Atrioventricular valve? Arterial valve? Blood flow? The early? Shrinkage? To relax? O
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