11 2 blood a fluid tissue
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11.2 Blood: A Fluid Tissue. Pages 482-486. Function of Blood. Delivers oxygen to cells, picks up carbon dioxide Delivers nutrients to cells and collects wastes Temperature regulation Circulation of hormones. Components. Red blood cells White blood cells Platelets Plasma. Plasma.

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11.2 Blood: A Fluid Tissue

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11 2 blood a fluid tissue

11.2 Blood: A Fluid Tissue

Pages 482-486


Function of blood

Function of Blood

  • Delivers oxygen to cells, picks up carbon dioxide

  • Delivers nutrients to cells and collects wastes

  • Temperature regulation

  • Circulation of hormones


Components

Components

  • Red blood cells

  • White blood cells

  • Platelets

  • Plasma


Plasma

Plasma

  • 90% water

  • Dissolved O2, CO2, glucose, vitamins and minerals, wastes

  • Proteins:for clotting, immunity and water balance

  • Dissolve ions Na+, K+, Ca2+, Cl-, and HCO3-


Albumins

Albumins

  • Control water levels in the blood


Globulins

Globulins

  • Transport lipids, cholesterol, fat-soluble vitamins (A,D,E and K), some minerals

  • Immunoglobulins (antibodies)


Fibrinogen

Fibrinogen

  • Role in blood clotting


Serum

Serum

  • Plasma with fibrinogen and clotting factors removed.


Erythrocytes

Erythrocytes

  • Red blood cells

  • Biconcave disks

  • 135 RBC’s per mm

  • Formed from stem cells in bone marrow

  • No nucleus in mature cells

  • Lifespan 120 days

  • Liver and spleen break RBC’s down


Leukocytes

Leukocytes

  • White blood cells

  • nucleus

  • Granular leukocytes (neutrophils, eosinophils and basophils) kill bacteria

  • Agranular leukocytes (lymphocytes, monocytes) engulf bacteria

  • Pus


Granules

Granules


Platelets

Platelets

  • Protection

  • Produced in the bone marrow

  • Blood clotting

  • Platelets and fibrinogen form clot


Blood count

Blood Count

  • Hemocytometer

  • Anemia (low RBC coun t)


Plasma1

Plasma

Plasma 55-58%

  • Water 91-92%

  • Plasma proteins 7-8%

  • Dissolved things 1-2%


Cells

Cells

  • Platelets 250000-300000 per microlitre

    Leukocytes

  • Neutrophils 3000-6750

  • Lymphocytes 1000-2700

  • Monocytes/macrophages 150-720

  • Eosinophils 100-360

  • Basophils 25-90

  • Erythrocytes 4 800 000-5 400 000


Blood types

Blood Types

  • Markers A and B

  • Type A…marker A

  • Type B…marker B

  • Type AB…marker A & B

  • Type O…no marker


Immune response

Immune response

  • Transfusions of blood with a different marker causes an immune response


Rhesus factor

Rhesus Factor

  • 85% are Rh-positive


Artificial blood

Artificial Blood

  • HBOC hemoglobin-based oxygen carriers

  • PFCEperfluorocarbon emulsions


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