What is meant by the term health?
is a state if mental, physical and social wellbeing and the absence of disease.
Being well fed with a balanced diet and not having a disease
What is a Parasite
An Organisms that lives in or on it's host and causes harm to it's host by taking nutrition from it's host.
An organism that lives in or on it's host and causes disease
How can Bacteria cause disease?
They can reproduce rapidly
They damage our cells
They release waste products that are toxic to us.
They take our our genetic material
They don't cause disease
How does Fungi cause disease?
Fungus lives in the skin and sends out reproductive Hyphae that grow to the surface of the skin and release spores.
Fungus live in the body and release toxins that damage our cells.
Fungus send out reproductive Hyphae to the blood.
How do Viruses cause disease?
Invade Cells
Take our genetic machinery of the cell
Make the cell manufacture copies of the virus
Eventually the host cell bursts which releases the new viruses
Release toxins
Take over the brain
How does a Protoctista cause disease?
Enter the Host cells and feed in the contents
Causes damage to the red blood cells in the blood
What 4 things must a Pathogen be able to do to be able to cause disease?
Travel from one host to another
Get into the host's tissues
reproduce
cause damage to the host's tissues.
release waste products that are toxins to us
damage the lining of blood vessels
What is the name of the pathogen that causes Malaria?
Plasmodium
human immunodeficiancy virus
Mycobacterium Tuberculosis
M.Bovis
How is Malaria spread
By a Vector
By droplet infection
by physical contact
by exchange of bodily fluids
What is the Vector that spreads Malaria
Female Anopheles Mosquito
Humans
Any blood sucking insect
