body coordination glossary Flashcards
antibiotic
a medicine that weakens/destroys microbes such as fungi and bacteria. antibiotics have no effect on viruses
bacteria (single bacterium)
microscopic organisms forming one of six kingdoms of living things: some types of bacteria are pathogens
immune system
the body system that defends/prevents the body against infections or diseases
infection
the presence of a pathogen inside the body
microbe
a living thing that can only be seen with the help of a microscope
pathogen
a microscopic organism that can cause disease
virus
a typer of microscopic pathogen that can only multiply by invading a living cell
antibody
a protein that can identify and fight a specific pathogen. Produced by B cells, specialised to fight one the of pathogen.
Bacterium
A simple, single celled microbe without. a nucleus.
Chemical Barrier
A defence that kills pathogens before they can enter the body
Cilia
Microscopic hairs on cell that line the airways
Contagious disease
A medical condition that can spread from person to person by a pathogen
disease
A medical condition with specific symptoms
first line of defence
Barriers that prevent pathogens from entering the body. e.g. skin saliva, urine, tears
immunity
The body’s ability to protect itself from infection