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中职英语医护英语上册Unit 6 The Blood System优秀导学案
展开Reading B Bld Grups and Transfusin
Think ver while reading
1. Hw are the bld grups divided?
2. Hw many grups are there in ABO bld grup system? What are they?
3. Hw many grups are there in Rh bld grup system? What are they?
4. Why must a bld crss-matching test be cnducted befre a bld transfusin?
Reading
The bld grup systems refer t the types f the specific antigens n the cell membranes f the erythrcytes. Generally speaking, there are tw majr bld grup systems, that is, the ABO bld grup system and Rh bld grup system.
In the ABO bld grup system, the bld is divided int fur bld types — A, B, O and AB accrding t the antigens n the cell membranes f the erythrcytes. The persns with type A bld have A antigens; thse with type B have B antigens; thse with type AB have bth A and B antigens; and thse with type O have neither A nr B antigens.
The substances that react with the antigens are tw kinds f bld grup antibdies — anti-A antibdy and anti-B antibdy. The feature f the distributin f the bld grups antibdies in the ABO bld grup system is that the plasma des nt cntain the antibdies which may react with the antigens n cell membranes f the erythrcytes. The persns with type O bld are called universal dnrs because the plasma f type A, B and AB has n antibdies t type O. Cnversely, thse with type AB bld are called universal recipients because their plasma has n antibdies t the antigens f the ther three types.
In the Rh bld grup system, there are five kinds f antigens—D, C, c, E and e. Antigen D has the greatest antigenicity. S the bld is divided int tw bld grups—Rh-psitive and Rh-negative accrding t whether it has antigen D n the cell membranes f the erythrcytes. Rh-psitive refers t that with antigen D n the cell membranes f the erythrcytes, whereas, Rh-negative refers t that withut antigen D n the cell membranes f the erythrcytes.
Befre a bld transfusin is perfrmed, the ABO bld grups must be identified by the crss-matching test t assure the cmpatibility f the bld grups between the dnatrs and recipients. In the case f the wmen wh are in their child-bearing age r the patients wh have experienced repeated bld transfusin, the cmpatibility f the Rh bld grups f the dnrs and recipients must be made sure as well.
Befre a bld transfusin is perfrmed, the ABO bld grups must be identified by the crss-matching test t assure the cmpatibility f the bld grups between the dnatrs and recipients. In the case f the wmen in their child-bearing age r the patients having experienced repeated bld transfusin, the cmpatibility f the Rh bld grups f the dnrs and recipients must be made sure as well.
Ntes
1. In the ABO bld grup system, the bld is divided int fur bld grups…
在A、B、O血型系统中,血液分为四种。
be divided int … :被分为。例如:
The class is divided int tw grups.
这个班分为两个小组。
2. The substances that react with the antigens are tw kinds f bld grup antibdies — anti-A antibdy and anti-B antibdy.
与这些抗原发生反应的物质是两种血型抗体 — 抗A抗体和抗B抗体。
The substances that react with …:关系代词that 引出限制性定语从句,修饰先行词substances。
react with …:与……发生反应/作用。
3. The feature f the distributin f the bld grups antibdies in the ABO bld grup system is that the plasma des nt cntain the antibdies which may react with the antigens n cell membranes f the erythrcytes.
A、B、O血型系统的血型抗体分布的特征是:血浆中不含有会与红细胞膜上抗原发生反应的抗体。
…is that the plasma des nt cntain the antibdies which may react with the antigens n cell membranes f the erythrcytes:连接词that 引导一个表语从句。例如:
My wish is that I can becme a famus surgen.
我的愿望就是成为一名著名的外科医生。
which may react with…:关系代词which 引出限制性定语从句,修饰先行词antibdies。
4. Befre a bld transfusin is perfrmed, the ABO bld grups must be identified by the crss-matching test t assure the cmpatibility f the bld grups between the dnatrs and recipients.
输血前,一定要通过交叉配血实验来鉴定ABO血型,以保证供血者和受血者血型相合。
… must be identified … :此处是情态动词的被动形式。例如:
The patient must be given an intravenus injectin right away.
应该马上给这位患者进行静脉注射。
5. In the case f the wmen in their child-bearing age r the patients having experienced repeated bld transfusin, the cmpatibility f the Rh bld grups f the dnrs and recipients must be made sure as well.
对于育龄妇女或有反复输血经历的患者,还必须保证供血者与受血者的Rh血型相合。
… having experienced… :现在分词短语修饰patients,作后置定语。例如:
The nurses having experienced in caring patients are always very patient t their patients.
护理病人方面有的经验的护士对病人总是非常地耐心。
Summing-up
1. The bld grups are divided accrding t the types f the specific antigens n the cell membranes f the erythrcytes.
2. The bld is divided int fur bld grups in the ABO bld grup system, they are type A, type B, type AB and type O.
3. The bld is divided int tw bld grups in the Rh bld grup system, they are Rh-psitive and Rh-negative.
4. Because it can assure the cmpatibility f the bld grups between the dnatrs and recipients.
Cre Skills and Practice
= 1 \* ROMAN I. Chse the best answer.
1. The bld grups refer t the types f the specific antigens n the cell membranes f the ________.
A. plasma B. leukcytes C. platelets D. erythrcytes
2. Generally speaking, there are ________majr bld grup systems.
A. many B. 4 C. 3 D. 2
3. Thse with _______ bld is called universal recipients.
A. type A B. type B C. type AB D. type O
4. Rh-psitive refers t that with ______ n the cell membranes f the erythrcytes.
A. antigen E B. antigen c C. antigen C D. antigen D
5. The plasma f type AB has n antibdies t the antigens f _______.
A. type A B. type B C. type O D. all f the abve
= 2 \* ROMAN II. Read the text again and decide whether the statements are true (T) r false (F).
The persns with type A bld have a antibdy.
In the ABO bld grup system, the plasma des nt cntain the antibdies which may react with the antigens n cell membranes f the erythrcytes.
Thse with type O bld are called universal dnrs because the plasma f type A, B and AB has n antibdies t type O.
In the Rh bld grup system, there are 4 kinds f antigens—A, B, AB and O.
The patients wh have experienced repeated bld transfusin will nly be cnducted the crss-matching test t assure the cmpatibility f the bld grups between the dnatrs and recipients.
III. Translate the fllwing int Chinese.
Generally speaking, there are tw majr bld grup systems, that is, the ABO bld grup system and Rh bld grup system.
The substances that react with the antigens are tw kinds f bld grup antibdies—anti-A antibdy and anti-B antibdy.
The plasma des nt cntain the antibdies which may react with the antigens n cell membranes f the erythrcytes.
The persns with type O bld are called universal dnrs because the plasma f grup A, B and AB has n antibdies t grup O.
Befre a bld transfusin is perfrmed, the ABO bld grups must be identified by the crssmatching test t assure the cmpatibility f the bld grups between the dnatrs and recipients.
Warm-up
1. D yu knw hw many bld types are there in human bdy?
2. Hw many majr systems are there in the bld?
3. D yu knw the crss-matching test befre a bld transfusin?
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