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Hematology

Blood Types

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Biology
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Blood
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Transfusion medicine
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Hematology
Blood type
Human blood group systems
Cross-matching
Rh blood group system
Blood transfusion
ABO blood group system
Antibody

ABO and Rh Blood Groups Blood type is inherited from your parents and is determined by the presence or absence of certain antigens, or agglutinogens, on the surface of red blood cells. Blood plasma also contains specific antibodies, or agglutinins. These antibody molecules will react to foreign antigens causing those cells to burst, a process called hemolysis. This is why it?s important to perform blood type testing before blood transfusions. There are several types of surface antigens on blood cells, but the ABO and Rh antigens are the most common. Rh Blood Group: The Rh blood groups has two types, Rh positive and Rh negative. The Rh surface antigen is also called the D antigen. If the antigen is present, the type is Rh+ and if it is absent, the type is Rh-.

Hematocrit Activity

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Anatomy
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Hematocrit
Red blood cell
White blood cell
Centrifuge
Erythrocytapheresis
Hemorheology

Hematocrit Name _______________________ Date _______________Pd_______ A hematocrit is a blood test that measures the ratio of the volume of red blood cells to the total volume of blood. A blood sample is usually collected in a small capillary tube and spun down in a centrifuge so that the more dense erythrocytes settle at the bottom and the liquid plasma rises to the top. The leukocytes and thrombocytes form a whitish layer below the plasma. A hematocrit can also be run from a sample of blood taken from a vein. Then the length of the column is measured and calculations are performed to determine the % of red blood cells. Using what you know about blood composition, draw and label a normal hematocrit result on the test tube image below.

ib english

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Anatomy
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Immune system
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Red blood cell
Respiration
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Adaptive immune system
Phagocyte
Blood

Previous IB Exam Essay Questions: Unit 10 Use these model essay questions and responses to prepare for essay questions on your in-class tests, as well as the IB Examination, Paper 3. The questions below have appeared on IB HL Examinations over the past several years. The answers following the questions are the markscheme ideal responses used to evaluate student examination responses. 1. Outline the experiments of Miller and Urey into the origin of organic compounds on Earth. 6 marks apparatus contructed in which chemicals could circulate gases of pre-biotic Earth`s atmosphere mixed inside methane (as a carbon source) ammonia water vapor and hydrogen sparks/ electric discharge (to simulate lightning) high temperature/ boiling water no free oxygen
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