Higher Human Biology 3.5 Non-Specific Defences

What type of defence are tears?

• Physical

• Chemical

What type of defence are epithelial cells ?

• Physical

• Chemical

What type of defence are stomach acid ?

• Physical

• Chemical

What term is used to describe a bacterium, virus or other organism that can cause disease?

What term is used to describe the ability of the body to resist infection by a pathogen or destroy the organism if it succeeds in invading and infecting the body?

What chemical is released during the inflammatory response that causes blood vessels to vasodilate?

What type of cells produce histamine?

What is the localised defence mechanisms When the body suffers a physical injury such as a cut and/or invasion by microbes?

By what process do phagocytes destroy pathogens?

What process involves the engulfing of pathogens and their destruction by digestive enzymes contained in lysosomes?