GoConqr hat ein neues Design! Sag uns, wie es dir gefällt.

Kostenlos registrieren

Karteikarten

7.0 Blood

Jonathan Cash HAP 1 5 Englisch 16 Karten

Karten in diesem Stapel (16)

  1. 1The composition of bloodBlood is connective tissue. Therefore cells surrounded by a matrix of fluid and (potential) fibres.
  2. 2CellsErythrocytes - (red blood
    cells - RBC)
    Leucocytes - (white blood cells – WBC)
    Thrombocytes - (platelets)
  3. 3Fluid matrixplasma /c dissolved
    protein for making
    fibres which become
    visible/active during clotting
  4. 4Describe the functions of bloodTransport
    Gases, nutrients, wastes
    Regulation
    Temperature, pH, fluid volume
    Protection
    Against blood loss, infection
  5. 5Describe the structure and function• Bi concave discs gas exchange & can bend through capillaries
    •  5,000,000 / mm3 ml of blood
    • No nucleus therefor don't reproduce & die after 120 days
    •Contain 250 million haemoglobin molecules
    • 4 haem (heme) part can iron atom at the centre of each, to which O2 binds - bright red colour
    • Each haem is surrounded by a large twisted protein globin molecule to which CO2 binds
  6. 6Outline the control of erythrocyte production• Blood loss decreases levels of O2 in the blood
    • kidneys releasing erythropoietin
    • Erythropoietin targets red bone marrow
    • Red bone marrow increases RBC production
    • RBC’s increase O2 levels in the blood
    • Homeostasisis restored
  7. 7Describe the structure and function of leucocytes• Defend against disease
    • Leave & return to the blood stream
    • <1% of blood volume
  8. 8leucocytes, Most to least common Neutrophils
     Lymphocytes
     Monocytes
     Eosinophils
     Basophils
    (Never Let Monkeys Eat Bananas)
  9. 9Neutrophils Phagocytic, most numerous & 1st at site of acute infection
     Engulf bacteria & then die
  10. 10Lymphocytes – 2 types B cells produce antibodies
     T cells act against virus-infected cells & cancer cells
  11. 11Monocytes develop into tissue macrophages & become phagocytic
     especially active in chronic infections  engulf microbes &
    survive
  12. 12Eosinophils Destroy worms
     Destroy antigen – antibody (immune) complexes
     Lessen the severity of inflammation
  13. 13Basophils Stimulate inflammation by releasing histamine -> vasodilation & increase WBC in an infected area.
  14. 14Describe the structure and function of plateletsPlatelets
    • Fragments of large cells
    • Activity triggered during
    bleeding to form a temporary plug before the clot can form (which takes about 6 minutes)
  15. 15Describe ABO and rhesus (Rh) blood groups• Plasma membrane of erythrocytes
    covered in glycoproteins (known as antigens - substances that cause us to form antibodies)
    •Body recognises own blood group antigens but not those of the other groups,  makes antibodies against them
    • In our plasma are the antibodies to the other group but not our own
  16. 16ABO System Group A: has A antigens & B antibodies
     Group B: has B antigens & A antibodies
     Group O: has no antigens, but both A & B antibodies
     Group AB: has A & B antigens and no antibodies
     Everyone has one of these

Informationen

Beschreibung
5 HAP 1 Karteikarten am 7.0 Blood, erstellt von Jonathan Cash am 28/08/2015.
Erstellt von
Jonathan Cash
Aufrufe
6
Tags
hap1
Bewertung

Mehr zu Blood composition and functions

Feedback

Worum geht es?

Wie gefällt dir das neue Design?

Dein Eindruck