Host-microbe interactions

Question 1

the body is

Answer 1

not a uniform envrionment and has its own factors

Question 2

lysozyme

Answer 2

sterlie in the blood stream

Question 3

normal microbiota

Answer 3

dont cause disease under normal conditions

Question 4

a lower virulence is

Answer 4

more likely to cause disease

Question 5

infections

Answer 5

are caused by pathogens

Question 6

parasites

Answer 6

live on the host

Question 7

strict pathogens

Answer 7

only some can affect the host

Question 8

opportunistic pathogens

Answer 8

can take advantage of a weakened immune systems

Question 9

a host/ mircobe relationship depends on

Answer 9

host condition and pathogenicity

Question 10

what are the 4 lochs prostulates

Answer 10

1. the pathogen must be everywhere
2. must be isolated and grow in pure culture
3. can cause disease when put into something else
4. shown to the original organism

Question 11

what is the skin environment like

Answer 11

low in Aw and nutrition, dry has epidermis, dermis and sebaceous tissue

Question 12

what are the 3 types of glands?

Answer 12

eccrine= finger tips
apocrine= underarms
sebaceous - hair follicles

Question 13

stap epidermis on skin

Answer 13

it causes acne bc it makes oil and then acidifies it 
younger kids (-)

Question 14

environment of oral cavity

Answer 14

saliva is the nutrition source

Question 15

what are the 5 steps for oral activity

Answer 15

1. thin film makes saliva glycoproteins
2. colonization by spices of strep
3. formation of plaque as biofilm thickens
   4 growth of other microbes
4. too much plaque then dental

Question 16

facultative

Answer 16

form in the GI tract so the deeper layers of the biofilm and grow

Question 17

environment of the GI tract

Answer 17

stomach (2-4)
small intestine (4-6) site of primary fluid absorption 
large intestine/ colon -7 -- no O and highest microbes

Question 18

Environmental of respiratory tract

Answer 18

upper: has epiglottis, oral, throat
lower: lungs, sterile and cilial elevator

Question 19

DPT (dipheria) causes

Answer 19

-> tetanus and Corynebacterium

Question 20

environment of Urogenial tract

Answer 20

vag weak acidic
bladder is sterile
urethra is facultative and (-)
age is big factor