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Immunity and disease > Defense mechanisms > Flashcards

Defense mechanisms Flashcards

1
Q

Physical barriers preventing entry (non specific)

A

The skin- impermeable physical barrier
Mucocillary escalator- Airways mucus and cilia
Reflexes- Sneezing coughing and blinking

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2
Q

Chemical barriers preventing entry

A

Sebum- Antibacterial fatty acids (pH5.4)
Tears- Lysosome destroys bacterial cell walls
HCl acid- Gastric juice, lactic acid,
vagina

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3
Q

Non specific responses

A

Inflammatory response- phagocytes and chemicals
Phagocytosis- phagocytes engulf pathogens
Blood clotting- haemostasis

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Immunity and disease (5 decks)

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