How can micro-organism’s penetration be checked in the human body?
Answers
2-1 What are micro-organisms?
Micro-organisms are very small life forms that are not visible to the naked eye. They include bacteria, viruses, fungi and microscopic parasites. Micro-organisms are found everywhere (on our bodies, in food, in soil, water and plants). Most micro-organisms are not harmful to humans and many actually colonise and protect us by preventing growth of pathogens.
2-2 What are pathogens?
Pathogens are micro-organisms that can cause disease (infection) and are potentially harmful to humans. To cause disease, these pathogenic micro-organisms must first be passed on (transmitted) to a person and then overcome the body’s defence systems.
Pathogens are micro-organisms that can cause disease (infection) and are potentially harmful to humans
There are two main ways in which micro-organisms are acquired and can cause disease: Exogenous acquisition: micro-organisms acquired from outside sources. Endogenous acquisition: micro-organisms acquired from the host's own collection of micro-organisms (known as flora