Chapter 5: Communicable Diseases Flashcards
define communicable diseases
disease caused by pathogens that can be passed on from one organism to another
define pathogen
microorganisms that cause diseases
how does your diet make you ill?
- if you don’t get enough to eat, you can suffer from starvation, anemia, or rickets
- too much food leads to obesity, cancer, or type 2 diabetes
how can stress make you ill?
too much stress can result in heart disease, certain cancers, and mental health problems
name three life situations that can make you ill
- gender
- ethnic group
- where you live
name 4 things that pathogens could be
- bacteria
- viruses
- protists
- fungi
name the most common pathogens in plants
- viruses
- fungi
why is pathogenic bacteria significant?
pathogenic bacteria is significant because of the major effects it can have to individuals or society
how do pathogens cause diseases? (bacteria)
bacteria divide rapidly by splitting in two. they also produce toxins that effect your body and make you feel ill
how do pathogens cause diseases? (viruses)
viruses take over the cells of your body, and live and reproduce in them- damaging the cell
How do pathogens spread by air?
when humans sneeze, cough, or talk, they expel many pathogens in the form of droplets into the air. when other people ingest these droplets, they too can become sick
How do pathogens spread by direct contact?
- in plants, a tiny piece of infected material can infect a whole crop
- in humans, the most common way is through sexual contact tor needle puncture that give access to the blood
How do pathogens spread by water?
- eating raw or contaminated meat
- drinking water containing sewage
What are the main symptoms of measles?
red skin rash and fever
How is measles spread?
inhalation of droplets from coughs or sneezes
