What are the various ways through which microorganisms enter your body?
They can enter your body through your eyes, mouth and nose.
What is the name of the minimum number of microorganisms necessary to enter the body and establish infection?
Described how microorganisms cross the barriers and enter the human body by inhalation and inoculation?
Pathogens (bacteria and viruses that cause disease) can enter the body through various passages. Skin provides good protection against entry from pathogens so your vulnerable areas are your eyes, nose, mouth, ears and open wounds. Your (unwashed) hands can deliver pathogens to these areas. Airborne pathogens will enter through the mouth or nose as you breath them in. Pathogens in food will enter through your mouth into your digestive system. Pathogens can also enter through…