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45 Cards in this Set
- Front
- Back
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Don't worry about the details of Fig. 12.4, but DO be able to identify blood components in microscope slides.
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Gotcha
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What kind of tissue is blood?
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CT
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The formed elements of blood are cells and also these.
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and also cell fragments
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formed elements represent what percent of blood volume?
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45%
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Extracellular matrix of blood
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plasma
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What makes blood special from any other CT
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It's fluid
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Color of oxygenated blood
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Bright scarlet
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Color of deoxygenated blood
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dark red
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amount of blood in average body
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5 liters
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blood accounts for what percent of total body weight?
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8% of total body weight
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Three major functions of blood (all end in "-tion")
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Transportation
Regulation (homeostasis) Protection |
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the 4 things blood transports
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Respiratory gases
Nutrients (plus vitamins and electrolytes) Waste products Hormones |
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What's a less fancy word for electrolytes?
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Salts
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What are the 2 waste products that blood carries?
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Metabolites and urea
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Metabolites
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Non-useful by-products of metabolism
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What is the nitrogen-containing compound that's a waste product transported by blood?
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Urea is nitrogen-containing compound
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Chemical messengers blood carries are formally called what?
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Hormones
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Blood regulates what three factors?
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Acidity of body fluids
Amount of fluids in & around tissues Distribution of heat in body |
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Blood regulates the amount of fluids in & around tissues, especially what fluid?
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Esp. water
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Blood protects us against what two things?
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Disease and hemorrhage
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How does blood protect us from disease?
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White blood cells attack pathogens
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How does the blood protect us from hemorrhage?
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Via clotting mechanisms
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Two components of blood
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Plasma + formed elements
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Plasma carries a small amount of this gas
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oxygen
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plasma makes up what percent of blood's volume?
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55%
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The three formed elements of blood
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Erythrocytes
Leukocytes Platelets |
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A fancier word for platelets
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Thrombocytes
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Fancy name for red blood cells
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Erythrocytes
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Main function of erythrocytes
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Transport O2
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Hematocrit
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Percentage of RBCs in a patient's blood
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Normal hematocrit of blood
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45%
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Scientific name for white blood cells
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Leukocytes
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Main function of leukocytes
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Protect against infection
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Which cell type is more abundant: RBC's or WBC's?
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WBC's are much less abundant
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What percent of blood is WBC's?
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less than 1%
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Platelets
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Cell fragments
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Why are platelets important?
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Important in clotting mechanism
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What kind of blood cells have variably shaped nuclei?
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WBC's have variably shaped nuclei
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Shape of WBC's
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Round
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What type of blood cell tends to be colorless?
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WBC's
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Occurrence of WBC's per cubic millimeter?
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7500 per cubic mm
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Ratio of RBC's to WBC's
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700:1
RBC's to WBC's |
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Two factors that vary from WBC to WBC
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Size
and shape of nucleus |
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When you stain a WBC with a chemical dye, what SOMETHINGS suddenly appear?
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Granules of WBC's appear
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In this chapter on blood, we learned about one of the most commonly used tools in medical diagnosis. What tool is this?
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Relative percentages of WBC types in a patient's blood = one of the most commonly used tools.
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