Developing infection Flashcards
Define: Pathogentic
Disease causing
Define: Pathogen
An organism causing disease to its host
Define: Zoonosis
Infection that has come from an animal
Define: Subclinical
Without symptoms
Define: Antigen
The production of antibodies
Types/ features of infections miro-organisms
Bacteria
- Prokaryotic- ‘Lacking a nucleus’
- Single- celled organism
- They have gentic material in the form of DNA
- Own cellular ‘machinery’ to grow and reproduce
Types/ features of infections miro-organisms
Virus
- Simplest type of miro-organism
- Virus are smaller cells
- Are not free- living and need to infect cells to multiply
- Virus are described as ‘intracellalar parasites’
Types/ features of infections miro-organisms
Fungi
- A plant like organism that does not make chlorophyll
Types/ features of infections miro-organisms
Protozoa
- Single celled animals
- Many are free living
- Some infect the human body as infectitions, if the body immune system is weakened.
Types/ features of infections miro-organisms
Helminths
- Parasitic worms
- Adult Helminths can be seem with a naked human eye
- Inculding flukes and tapeworm
Types/ features of infections miro-organisms
Prions
- Misfolded protein
-Can give this to other proteins
-Trigger cellular death (Nicrosis)
Chain of infection
The process by which a pathogen spreads from one host to the next.
- Organism- Bacteria, fungi, parasites, prions
- Reservoir- people, equipment, food, insects, water, animals
- Portal of exit- blood, secretions, excretions, skins
- Trasmission- Physical, contact, droplets, airborne
- Portal of entry- Mucous membrane, respiratory system, digestive system, Broken skin
- Susceptible host- Immune deficiency, diabetes, burns, surgery, age
-Organism
Define Pyrecia response
The elevation of an individual’s core body temperature above a ‘set-point’ regulated by the body’s thermoregulatory center in the hypothalamus.
Neutrophil
Undertakes phagocytosis to remove pathogens
Mast cells
Relase histamine as part of the inflammorty responses
