immunity -phagcytosis -non specifc

What cells carry out phagocytosis?

phagocytes

what part of immune response is phagocytosis part of?

non-specific

how do the white blood cells know of the presence of pathogens

pathogens release chemicals detected by the phagocytes

when the phagocyte engulfs a pathogen what is it called

phagosome

what happens after engulfing a pathogen

lysosomes migrate towards the phagosome and fuse with releasing lysozyme (enzymes) that hydrolyse the pathogen.

when the lysosome has fused with the phagosome what is it called

phagolysosome

what happens to the pathogen debris

particles are absorbed or released as a waste product

name the six non-specific defence mechanism

skin, eyes ,nose ,stomach, ciliated epithelial cells, phagocytes

what special about the stomach

contains hydrochloric acid of pH 2

special about the skin

physical water-proof barrier against pathogens

special about the eyes

tears contain enzymes e.g. lysozymes that break down the cell wall of pathogens

special about the nose

contains goblet cells that produce mucus that prevents pathogens from entering the body, this mucus also contains lysozymes.

special about ciliated epithelial cells

have cilia that line the trachea and trap any microorganisms from entering the body

What is the non-specific immune response?

Response is immediate and the same for all pathogens

what are antigens ?

proteins that line the cell plasma membrane of cells, they are specific to each individual organism.

what are cells that are not your own called

non-self cells

what are the hosts cells called

self cells

how are the pathogens antigens advantages to an organism

your immune system recognises them as non-self triggering an immune response.