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Biology- Pathogens and Immunity- ch10 - Coggle Diagram
Biology- Pathogens and Immunity- ch10
pathogen- a disease-causing microorganism
viruses, bacteria, protoctists, fungi
Transmissible diseases- a disease caused by a pathogen that can be passed from one person to another
direct contact
indirect contact:1. respiration 2. food/water 3. vectors
Infection- the entry of pathogen into the body
Host - the person animal in which the pathogen survives and breeds
contagious diseases. diseases transmitted through direct contact
transmission - The passing of pathogen to an uninfected person
vectors - an organism that carries pathogen from one host to another
raw sewage - untreated sewage
antibodies - chemicals(proteins) secreted by lymphocytes, which attach to antigens and destroy them
immune response- the way in which lymphocytes respond to pathogens and produce antibodies
vaccination- the introduction to the body of dead or weak pathogens, to make a person immune to an infectious disease.
auto-immune diseases- disease caused by person's own immune system attacking parts of their own body
immune - able to fight off a particular type of pathogen before it causes any symptons in the body.
memory cells- cells produced by activated lymphocytes, that remain in the body, and are able to respond quickly to the pathogen.
Body defences
mechanical
hair
skin
blood clotting
chemical
saliva
WBCs
cilia
HCL acid
active immunity- Active immunity occurs when our own immune system is responsible for protecting us from a pathogen
passive immunity- Passive immunity occurs when we are protected from a pathogen by immunity gained from someone else.
antigens- chemicals on the surface of the pathogens that are recognised as 'foreign' by lymphocytes in the body