Midterm Reviewer Part 1 Flashcards
study of microbes; most of these microbes essentially need the use of various types of microscopes in order to be seen and studied
Microbiology
very small living and nonliving entities
Microbes
2 major categories of microbes
Acellular & Cellular
“infectious particles” ; includes viruses and prions, lack the cell structure and organelles
Acellular Microbes
include all bacteria, archaea, protozoa, algae, fungi
Cellular Microbes
disease-causing microbes
Pathogens
microbes that do not cause disease
Non-Pathogens
percentage of microbes that is said to be pathogenic
3%
resident microbes in a particular organ / organ system
Indigenous Microbiota
these are usually free from indigenous microbiota
Fetus, Blood & Lymph, Spinal Fluid, Most Tissues and Organs
usually don’t cause any problem but has the potential to do if they gain access to a oart where they do not belong, they are microbes waiting for the opportunity to cause disease
Opportunistic Pathogens
microbes that take up temporary residence on and within humans
Transient Microbes
reasons why transient microbes are temporary
Washed from external surface
Unable to compete with resident microbiota
Fail to survive in the acidic and alkaline environment of the site
Killed by substances produced by indigenous microbiota
Flushed away by bodily secretions
imbalance between the host and its microorganisms due to the destruction of resident microbiota
Washed from external surface
Unable to compete with resident microbiota
Fail to survive in the acidic and alkaline environment of the site
Killed by substances produced by indigenous microbiota
Flushed away by bodily secretions
has reach microbiome primarily bacteria and fungi
Skin Microbiota
most skin microbiota are _______ that live in the deeper layers of the skin, hair follicles
Anaerobes
most common bacteria of the skin
Staphylococcus spp. (epedermidis, aureus)
Corynebacterium
Propionibacterium
growth of many microorganisms is stimulated by exposure to ____, __________, _________,
Moist, Warm Conditions, Hairy Areas
sterile part/s of the ear
Middle Ear & Inner Ear
unsterile part/s of the ear
External Ear, Auditory Canal
protected by tears, mucus, sebum, lysozyme and other antimicrobial substances found in tear
External Eye
region of the respiratory tract where it contains abundant and varied population of microbes because area is moist and warm, most are opportunistic pathogens
Upper Respiratory Tract
region of the respiratory tract where it is free of microbes, sterile region because of inherent defense mechanism
Lower Respiratory Tract
shelter for numerous anaerobic and aerobic bacteria, they thrive in particles of food and in debris of dead epithelial cells around the teeth
Oral Cavity Microbiota
