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26 Cards in this Set
- Front
- Back
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List main functions of blood
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transport nutients, gases, waste products, hormones, and immune cells
and regulate body temperature |
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What are the components of blood and their relative precentages?
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Plasma 55%
Leukocyctes and platelets <1% RBC 45% |
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What charcteristics of blood make it connective tissue?
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derived from mesenchyme
consists of cells has extracellular matrix ground substance = blood plasma & fibers = clotting |
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What is in plasma?
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Water and disvolved substance (Serum)
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What is the difference between plasma and serum?
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Serum is plasma minus clotting factors
Plasma has everything |
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What are the 3 types of plasma proteins?
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Albumins (transport things also reason for blood osmotic pressure), globulins (antibodies), fibrinogens (clotting factors)
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What contributes to blood coloid osmotic pressure?
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Albumin
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Where does hemopoesis occur in adults?
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proximal femur, humerus, sternum, illiac crest
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Where does hemopoesis occur in fetus?
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liver, spleen, spongy bone
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What is the diameter of an RBC?
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~7.5 um
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Generally describe erythropoiesis
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occurs in red bone marry, ~120 day life span
reticulocycte (immature) ---> erythrocyte |
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What is the normal hematocrit of males?
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39-50%
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What is the normal hematocrit of females?
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35-45%
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Explain what an increased level of reticulocyctes means?
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More than 1% mean accelerated erythropoeisis
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Where do platelets come from?
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fragments of Megakaryoctes
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Describe function and location of megakaryocytes
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In bone marrow, makes platelets
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Describe appearance and function of platelets
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Small and smooth when inactivated, spinny and sticky when activated
used for clotting |
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What are the two major classification of WBC/leukocyctes?
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Granulocyctes and agranulocyctes
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Name the granulocyctes
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Neutrophils, Eosinophils, Basophils
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Name the agranulocyctes
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Monocyctes, Lymphocyctes
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What are the relative % of the leukocyctes
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N 60
L 30 M 6 E 4 B 1 |
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Increased ammount of neutrophils mean
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Bacterial infection
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Increased ammount of eosinophils mean
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Paristic infection, allergic reaction, chronic inflamation
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Increased ammount of basophils mean
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release of histamine or heparin
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Monocyctes can do what?
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Move out of blood and become macrophages
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What are the two different lymphocyctes?
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B and T
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