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BLOOD CIRCULATION AND TRANSPORTATION (BLOOD (TYPES OF BLOOD CELLS…

- - - - Heart :arrow_right: Giils
      - Eg: Fish :fish:
      - Single Atria single ventricle
    - - 2 atria 1 ventricle
        
        Eg: Frog :frog:
      - 2 atria 2 ventricles
        
        Eg: Bird :bird:
      - 2 circuits
        
        Systemic circuit
        pumps to all part of body
        
        Pulmonary circuit:
        pumps to lungs
- - - - TRILOBED :arrow_right: diffuse from cell to cell effectively
    - - each cell exchange INDEPENDENTLY
  - - - Circulatory fluid: Hemolymph
      - Eg: Arthropods & Molluscs
      - slow delivery of oxygen and nutrient
      - Grasshopper :
        
        colorless blood
        
        trachea opened to outside
    - - Circulatory fluid: Blood
      - Eg: Annelids
      - Blood moves into capillaries ; from small veins to dorsal blood vessels
- - - - 2 on each side
      - Upper :arrow_up: thin-walled = atrium
      - Lower :arrow_down_small: thick wall = ventricles
    - - divides heart into left and right
    - - Atrioventricular
        
        Tricuspid
        
        Mitral
      - Semilunar
        
        Aortic
        
        Pulmonary
      - HEART MURMUR: leaky atrioventricular valve
- - - - carry away from heart to capillaries
    - - return from capillaries to heart
      - :check: valves
  - - - nutrients
      - excretory products
      - gases
      - hormones
      - cells of no-respiratory function
      - heat
      - metabolites
  - - - Large phagocytising cell
    - - Transport oxygen
    - - Fight infection
    - - Engulf foreign material
    - - Fight infection
    - - Combating multicellular parasites
    - - Aniri-coagulant heparin
- - - - Thymus & Bone Marrow
    - - Lymph nodes, lymph follicles, spleen, skin