Upgrade to remove ads
Only $35.99/year

Chapter 14 micro

Terms in this set (83)

Pathology
the study of disease
Etiology
the study of the cause of a disease
Pathogenesis
the development of disease
Infection
colonization of the body by pathogens
Disease
an abnormal state in which the body is not functioning normally
Transient microbiota
may be present for days, weeks, or months
Normal microbiota
permanently colonize the host
Symbiosis
is the relationship between normal microbiota and the host
Normal Flora grows where?
abundantly on surfaces of human body
skin
Genitourinary tract
GI tract
respiratory tract
Skin
on the epidermis; dermis and hypodermis is axenic
Genitourinary tract
urethra, vagina
Gastrointestinal tract
more bacteria in one person's mouth than all of the people in the world!
Respiratory tract
upper respiratory tract; alveoli are axenic
Establishment of normal flora
Takes approximately 1 yr.- 18 mo.
5 importance of the normal flora
1.The normal flora synthesize and excrete vitamins
2. The normal flora prevent colonization by pathogens
3. The normal flora may antagonize other bacteria
4. The normal flora stimulate the development of certain tissues, i.e., certain lymphatic tissues (Peyer's patches) in the GI tract.
5. The normal flora stimulate the production of natural antibodies
Sets with similar terms