Mindmap

Composition of Blood

Agatha Tan Englisch

Inhalt der Mindmap

Plasma
- Pale yellowish liquid, 90% Water, dissolved substances
  - Soluble proteins
    - fibrinogen
    - Prothrombin
      - Clot blood, made in liver
    - Antibodies
      - Fight diseases
  - Dissolved mineral salts
    - Hydrogencarbonates
    - Chlorides
    - Sulfates and phosphates of calcium
    - Sodium and Potassium
  - Food Substances
    - Glucose
    - Amino Acids
    - Fats
    - Vitamins
  - Excretory Products
    - Urea
    - Uric acid
    - Creatinine
  - Hormones
    - Insulin
White Blood Cells (Leucocytes)
- Colourless, no haemoglobin
- Irregular in shape, has a nucleus
- Can move & change its shape
- Phagocytes
  - ingest foreign particles like bacteria
  - lobed nucleus
  - granular cytoplasm
- Lymphocytes
  - large rounded nucleus
  - small amount of non-granular cytoplasm
  - limited movements
  - Produce antibodies
Red Blood Cells (Erythrocytes)
- Contains Haemoglobin
  - Iron containing protein
  - Transport oxygen
- Circular flattened biconcave disc
  - increase SA to VR
    - absorb and release o2 at a faster rate
- No nucleus
  - can carry more haemoglobin, more o2
- Elastic, can turn bell-shaped
  - squeeze through blood vessels
- Produced by bone marrow, destroyed in the spleen
  - Haemoglobin released from destroyed rbcs brought to liver and broken down
Platelets (thrombocytes)
- membrane bound fragments of cytoplasm
- takes part in clotting of blood