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Immunity - Coggle Diagram
Immunity
Components of blood
Plasma
Transports CO2
Transports urea
Transports heat
Transports hormones
Transfers amino acids
Transfers glucose
Red blood cells
Haemoglobin
More oxygen can bind
Biconcave shape
Increases surface area
Increases diffusion
No nucleus
More space for haemoglobin
Thin cell membrane
Short diffusion distance
White blood cells
Phagocytes
Lymphocytes
Platelets
Release chemicals which form a mesh
Traps red blood cells
Forms a clot
Stops pathogens
Defence mechanisms
Barrier mechanisms
Skin
Largest natural barrier
Tears
Contain lysozymes
Enzymes that break down pathogens
Ciliated cells & goblet cells
Produce mucus
Traps pathogens
Move mucus
To sweep away pathogens
Stomach acid
HCl
Kills pathogens
Produces optimum pH for enzymes
Natural bacteria
Stomach
Vagina
Immune response
White blood cells
Lymphocytes
Produce antibodies to match the antigens on the pathogen
Phagocytes
Engulf & digest pathogens
Has digestive enzymes
Pathogens
Disease-causing microorganism
Bacteria
Virus
Fungi
Protoctista