B9.4 Blood

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14 Terms

1
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Name the four components of blood

  • Red blood cells

  • White blood cells

  • Plasma

  • Platelers

<ul><li><p>Red blood cells </p></li><li><p>White blood cells </p></li><li><p>Plasma </p></li><li><p>Platelers </p></li></ul><p></p>
2
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Describe the structure of a red blood cell

  • Bioconcave disc-shaped

  • Containing no nucleus

  • Red due to the pigmet of hemoglobin

<ul><li><p>Bioconcave disc-shaped </p></li><li><p>Containing no nucleus </p></li><li><p>Red due to the pigmet of hemoglobin </p></li></ul><p></p>
3
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Desctibe the structure of a white blood cell

  • Large cells containing a nucleus that varies in shape

  • Different kinds have different features & functions

<ul><li><p>Large cells containing a nucleus that varies in shape </p></li><li><p>Different kinds have different features &amp; functions </p></li></ul><p></p>
4
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Describe the structure of platelets

  • Small fragments of cells

  • Extentions to their surface that protrude out

<ul><li><p>Small fragments of cells </p></li><li><p>Extentions to their surface that protrude out</p></li></ul><p></p>
5
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Describe the structure of plasma

  • Straw coloured liquid

  • Contains proteins, hormones, salt and fats, along with heat energy.

<ul><li><p>Straw coloured liquid </p></li><li><p>Contains proteins, hormones, salt and fats, along with heat energy. </p></li></ul><p></p>
6
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What is the function of red blood cells?

  • Transporting oxygen required for aerobic resporation

  • Heamoglobin bonds with the oxygen to form oxyheamoglobin and deposits it after transportation

7
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What is the function of white blood cells?

  • Carry out phagocytosis & antibody production

8
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What is the function of the platelets?

  • Blood clotting

9
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What is the function of plasma?

  • A medium for the tansporation of:

    • Blood cells

    • Mineral ions

    • Nutrients

    • Urea

    • Hormones

    • Carbon dioxide

10
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What is the purpose of the blood clotting process?

  • Prevent continues & significant blood loss

  • Prevents entry of pathogens

  • Allows skin to repain & seal underneath

<ul><li><p>Prevent continues &amp; significant blood loss</p></li><li><p>Prevents entry of pathogens</p></li><li><p>Allows skin to repain &amp; seal underneath</p></li></ul><p></p>
11
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What are the two main types of white blood cells?

  • Phagocytes

  • Lymphocytes

12
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What is the function carried out by phagocytes?

  • Engulfing & digesting pathogens by the process of phagocytosis

13
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What is the function carried out by lymphocytes?

  • Production of antibodies

14
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How are lymphocytes distinguishable from phagocytes under a microscope?

  • Phagocytes have a multi-lobed nucleus and granular cytoplasm

  • Lymphocytes have a large rounded nuclus and clear cytoplasm

<ul><li><p>Phagocytes have a multi-lobed nucleus and granular cytoplasm </p></li><li><p>Lymphocytes have a large rounded nuclus and clear cytoplasm</p></li></ul><p></p>

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