Flashcards in blood - phyana lab Deck (87)
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1
functions of blood
transportation
regulation
protection
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composition of blood
55% plasma
45%formed elements
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composition of plasma
91.5% water
7% proteins
1.5% other nutrients
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proteins in plasma
albumin
globulin
fibrinogen
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(54%): function in osmosis; carriers
albumin
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(38%): serve as antibodies
globulin
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(7%): important in clotting
fibrinogen
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types of agranulocytes
nk cells
lymphocytes
monocytes
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Carries 98.5% of O2 and 23% of CO2
hemoglobin
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RBC count (gen, males, females)
RBC count: about 5 million/µl
Male: 5.4 million cells/µl; female: 4.8 million/µl
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structure of RBC which provides for maximal gas exchange
Is flexible for passing through capillaries
Lack of nucleus causes biconcave disc shape with extensive plasma membrane
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Appear white because of lack of hemoglobin
WBC
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Normal WBC count:
5,000-10,000/µl
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WBC count usually increases in
INFECTION
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Two major classes based on presence or absence of granules in WBC
Granular: neutrophils, eosinophils, basophils
Agranular: lymphocytes, monocytes
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usually make up 2/3 of all WBCs
Neutrophils
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Maj function of WBC
defense against
Infection and inflammation
Antigen-antibody (allergic) reactions
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wbc Life span:
typically a few hours to days
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high WBC count in response to infection, exercise, surgery
Leukocytosis
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low WBC count
Leukopenia
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from megakaryocytes
platelets
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normal count of platelets
150,000-400,000/µl blood
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functions of platelets
Plug damaged blood vessels
Promote blood clotting
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life span of platelets
Life span 5–9 days
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Life span of RBC
3-4 months or 120 days
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Blood types in each person are determined by
genetics
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antigen of Type A
A antigen
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antigen of Type B
B antigen
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antigen of Type AB
A antigen and B antigen
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