Introduction Flashcards
What does the human defence system allow?
It allows the body to resist infection.
What two parts does the human defence system consist of?
The general defence system and the specific defence system
What does the general defence system consist of? What does it aim to do?
It consists of the skin, mucous membranes and their secretions. They attempt to prevent the entry of all pathogens
What does the specific defence system consist of? What does it aim to do?
It consists of white blood cells and chemicals that destroy any pathogens that penetrate the body.
It attacks particular pathogens, either by producing antibodies against them or by killing infected cells.
What is the specific defence system also known as?
the immune system
Define a pathogen
It is an organism that causes disease
Define immunity
Immunity is the ability to resist infection
