Health And Disease Flashcards
What is definition of health
The state of physical and mental well being
What are the 4 types of pathogen
Virus
Bacteria
Fungi
Protists
How does the digestive system keep out pathogens
The stomach produces acid and it destroys the microorganisms in the mucus you swallow, as well as the majority of the pathogens you take in through your mouth in your food and drink.
How does the skin keep out pathogens
Your skin covers your body and acts as a barrier. It prevents bacteria and viruses reaching the tissue beneath. If you damage or cut your skin, the barrier is broken but your body restores it. You bleed, and platelets in your blood set up chain of events to form a clot that dries into a scab.
Your skin produces antimicrobial secretions to destroy pathogenic bacteria. Healthy skin is covered with microorganisms that help keep you healthy and act as an extra barrier to the entry of pathogens.