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Functions of Blood
- >transports nutrients, oxygen, wastes, hormones
- >helps maintain stability of interstitial fluid (homeostasis)
- >distributes heat
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4 components of blood:
- 1. red blood cells
- 2. white blood cells
- 3. platelets
- 4. plasma
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what forms in bone marrow?
- white and red blood cells
- platelets
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hematocrit
% of formed elements/red blood cells
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plasma
- -55% of blood sample
- -clear, yellowish
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another name for RBC
erythrocytes
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components of RBCs
- -hemoglobin
- -hematopoiesis
- -erythropoietin
- - B complex vitamins (RBC production)
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macrophages
destroy damaged RBCs
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Biliverdin
greenish pigment
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another name for WBCs
leukocytes
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2 categories of WBCs
granulocytes and agranulocytes
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3 types of Granulocytes
- neutrophils
- eosinophils
- basophils
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Another name for Platelets
thrombocytes
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3 types of Plasma protiens
- 1. albumins (osmotic balance)
- 2. globulins (transport)
- 3. fibrinogens (coagulation)
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Albumins
- -smallest of plasma proteins
- - most abundant (60%)
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Globulins
- -transport lipids
- -alpha, beta, gamma
- -36%
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Nonprotein nitrogenous substances
molecules that contain nitrogen atoms but are not proteins
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vasospasm
blood vessels contract
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serotonin
released by platelets
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coagulation
hemostatic mechanism
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prothrombin
produces plasma
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thrombin
catalyzes reaction
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embolus
clot that is dislodged
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agglutination
clumping on RBCs following transfusion reaction
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antigens
RBC surface molecule
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antibodies
carried in plasma
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Blood Type: AB
- Antigen A and B
- Neither Antibody
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Blood Type: O
- Neither Antigen
- A and B Antibodies
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Red Blood Cells
- -produced in bone marrow
- -contain protein hemoglobin
- -don't have nucleus
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White Blood Cells
- -immune system
- -destroy pathogens
- -CSFs (colony stimulating factors)
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Plasma
- -yellowish liquid
- -contains clotting factors
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Platelets
-clotting factors
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The average person has how much blood?
- -about 5 liters
- -7-8% body weight
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Life span of granulocytes?
about 12 hours
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What protein controls platelets?
thromobopoeitin
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What is the normal platelet count?
130,000-360,000
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What cell component is associated with hemophilia?
platelets
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Blood plasma is what percent water?
92%
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