First line of defense (overview)

Question 1

List all of the first line of defenses

Answer 1

ear wax + hair
eye lash
tears
saliva
nose hair + mucous
skin
mucous in respiration tract
stomach acid
urinary tract
persperiations

Question 2

nose hair + mucous

Answer 2

traps bacteria, cilia acts as a filter + covered in mucus that has antimicrobial properties to kill pathogen

Question 3

perspirations

Answer 3

secretions damage cell wall

Question 4

urinary tract

Answer 4

flushed consistently

Question 5

tears

Answer 5

contain antimicrobial enzymes

Question 6

skin

Answer 6

can’t be penetrated by bacteria + virus
Also secrete acidic substances = non-friendly environment

Question 7

respiration tract

Answer 7

kills microbes on contact
cilia sweep toward entrance
(sneezing + coughing = expel)

Question 8

stomach acid

Answer 8

digestive enzymes kills it before it diffuses more
low pH = kill it
stomach –> duodenum: rapid change to high pH
Natural flora out competes foreign invaders