Haematological system

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  • Created by: AmberJ1
  • Created on: 30-04-17 17:49
whats the function of blood?
transportation, regulation, protection
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how much does blood form of total body weight?
8%
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whats the temperature of blood?
38 degrees
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how much is plasma once blood has been centrifuged?
55%
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how much is RBC once blood has been centrifuged?
45%
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what is plasma?
liquid part of blood that contains the proteins and other electrolytes
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what are the WBC (lekocytes) ?
involved in immune system, only lives couple of hours or days
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what are RBC (erythrocytes) ?
involved in carrying oxygen, lacks nucleus, generate ATP anaerobically, biconcave, lives for about 120 days
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what are platelets (thrombocytes)?
involved in blood clotting, 2000-3000, disc shaped, no nucleus, live about 5-9days
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what are albumins?
maintain osmotic pressure
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what are globulins?
antibodies
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what are fibrinogens
protein for blood clotting
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whats anaemia?
low levels of RBC
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what does haemoglobin transport?
oxygen and carbon dioxide
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what does erythropoiesis mean?
making of RBCS
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what leukocytes are granular?
neutrophils, eosinophils and basophils
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what leukocytes are agranular?
lymphocytes and monocytes
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what are monocytes?
migrate to infected tissue, turn into macrophage
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what are lymphocytes?
either T or B cells, involved in specific immunity
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what are eosinophils?
combat inflammation
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what are basophils?
involved in inflammatory and allergic reactions
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what are neutrophils?
release enzymes to destroy bacteria
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what removes RBC?
spleen and liver
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whats blood group A?
only antigen A, antibody B
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whats blood group B?
only antigen B, antibody A
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whats blood group AB?
antigen A & B, neither A or B
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whats blood group O?
no antigens, antibody A & B
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what are the different RH blood groups?
Rh+ = contains rh antigen, Rh- = contains rh antigen
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what are the 3 mechanisms that reduce blood loss?
vascular spasm, platelet plug formation, blood clotting
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whats the extrinsic clotting pathway?
occurs quckily, tissue factor leaks into blood from damaged tissue then tissue factor initiates reactions
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whats the intrinsic clotting pathway?
slow & complex, activates in cells of blood vessels are damaged, activates clotting cascade
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whats a clotting cascade?
prothrombinase activates prothrombin into thrombin, thrombin converts soluble fibrinogen into insoluble fibrin, fibrin forms protein threads of a blood clot with the presence of calcium
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whats an embolus?
a blood clot, air bubble, piece of fatty deposit, or other object which has been carried in the bloodstream to lodge in a vessel and cause an embolism.
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Card 2

Front

8%

Back

how much does blood form of total body weight?

Card 3

Front

38 degrees

Back

Preview of the back of card 3

Card 4

Front

55%

Back

Preview of the back of card 4

Card 5

Front

45%

Back

Preview of the back of card 5
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