These diseases manifest quickly but are of short duration (influenza, for example)
acute diseases
Acellular agents that need living cells to develop their life cycle. They are forced parasites. Ex: smallpox, flu, herpes
viruses
These diseases occur simultaneously in several countries and affect a large number of people (AIDS, influenza)
pandemic diseases
The continuous alteration of one or more organs, which damages the physical and psychological well-being of the individiual.
disease
Prokaryotic single-celled organisms. Most are harmless or beneficial. Ex: cholera, tetanus, etc.
bacteria
Any substance that causes your immune system to produce antibodies against it.
antigen
Large proteins that are produced by lymphocytes B to destroy or neutralize foreign objects like bacteria and viruses.
antibodies
These diseases arise subtly and affect many people in a short time (ebola, bird flu)
epidemic diseases
We have internal and external defenses against infections. Name ONE external defence.
skin, mucous, secretions
These diseases are caused by pahtogeni microorganisms that can be transmitted and are contagious (influenza, AIDS, cholera)
infectious/parasitic diseases
Some arachnids and insects such as ticks, lice, or fleas can cause diseases or be carriers of a pathogenic microorganism. They live outside the body.
arthropods
These diseases are not caused by transmissible agents, so they are not contagious (cancer, Alheimer's)
non-infectious diseases
Unicellular or multicellular eukaryotes. Most are beneficial, but some are nail or skin parasites. Ex: athlete's foot
fungi
These diseases develop slowly but last for a long time or a lifetime (diabetes, for example)
chronic diseases
Protein particles that cause neurological disorders, such as bovine spongiform enecphalopathy.
prions
Eukaryotic unicellular organisms that live in humid environments. Some are parasites and cause diseases such as malaria.
protozoa
Name ONE internal defense against infection.
intestinal or gut flora, macrophages, antibodies and cell response
Name two of the three factors that determine health
Genetic, environmental, personal/social
A medical imaging technique that uses a magnetic field and computer-generated radio waves to create detailed images of the organs and tissues in your body.
MRI
There are many ways to prevent illnesses by adopting healthy life habits. Name two.