Chapter 10: Mechanisms of Infectious Disease Flashcards
What objectives do all living organisms share?
- To survive
- To Reproduce
What is caused when a pathogen gets by our defenses and the immune system is unable to eradicate them?
An Infectious Disease
What is a Host?
An organisms capable of supporting the nutritional and growth requirements of another
Mutualism indicates ….?
that BOTH host and microorganism derive benefits from an interaction.
Why are babies given Vitamin K at birth?
- intestinal bacteria that synthesize vitamin K ( for blood clotting) is absnet
Parasitic Relationship:
infecting organism benefits
Infectious Disease:
Host is injured or damaged
Prions:
- Misfolded proteins
- trigger normal proteins in the brain to fold abnormally
-attack nerve cells
Transmission:
infected meat , corneal transplant, infected organ transplant
Viruses:
incapable of replication outside of living cell
Bacteria:
Cytoplasm in the cell contain the material to replicate
Fungi:
Free living
- separated into yeast and molds
Parasites:
infect and cause disease in other animals
What is the study of incidence, distribution, and possible control of diseases and other factors relation to health?
Epidemiology
what are the modes of transmission?
-Penetration
-Direct Contact
- Ingestion
- Inhalation
Penetration :
breaking of the skin
Direct contact:
STI
Ingestion
Food Poisoning; Hepatitis A
Inhalation:
TB
T/F:
Antibiotics can be Bactericidal or Bacteriostatic
Ture
Antivirals:
interrupt the viral replication
- IS NOT A CURE
What do Antifungals do ?
Kill he Fungal
- Stops the Fungal from growing
What do Antiparasitics do ?
How do Monoclonal Antibodies work
- They trigger the immune system and helps it attack cancer or viruses
What prevents diseases?
Vaccines `
What is used if an infection causes irreversable and lethal damage to the pathogen?
Bactericidal antibiotics
What is used if an infection inhibits bacterial growth?
Bacteriostatic Antibiotics
