Physical Barriers And Non-specific Defences To Prevent Infection Flashcards
1
Q
Tears
A
-wash away irritating substances and microbes
-lysozyme kills many bacteria
2
Q
Skin
A
-physical barrier to entrance of microbes
-Acid pH discourages growth of microbes
-sweat,oil and fatty acid secretions kill many bacteria
3
Q
Large intestines
A
-normal bacterial inhabitants keep invaders in check
4
Q
Saliva
A
-washes microbes from teeth and mucous membranes of mouth
5
Q
Respiratory tract
A
-mucus traps organisms
-cilia sweep away trapped organisms
6
Q
Stomach
A
-HCI kills organisms
7
Q
Bladder
A
-urine washes microbes from urethra
