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Similar to Defence mechanisms. bph (20)
Defence mechanisms. bph
- 3. The First Line of Defense:
physical + chemical barriers
Physical Barriers
• Skin
• Mucous membrane
• Hair in nose
- 4. The First Line of Defense:
Chemical Barriers
• Sweat
• Sebum
• mucous
• Saliva and tears
• Cerumen (ear wax)
- 6. The Second Line of Defense:
Defensive Cells
• pathogen penetrates the first line of defense Defensive
cells and proteins Second line of defense
- 8. The Second Line of Defense: Defensive Cells
Myeloid cells
• polymorphonuclear leukocytes (PMNs).
Neutrophils
Eosinophils
Basophils
- 11. The Second Line of Defense: Defensive Cells
• Monocytes and Macrophages
•
- 15. The Second Line of Defense:
Fever
A mild or moderate fever fight bacterial infections
- 17. The third Line of Defense: Defensive Cells
Lymphoid cells
site of differentiation and on receptors:
- 18. Organs Of Immune System
• Primary Lymphoid
Organs
– Bone Marrow and
Thymus
Maturation Site
• Secondary Lymphoid
Organs
– Spleen, lymph nodes,
– MALT (mucosal associated
lymph tissue)
- 22. MALT
• throat (NALT) respiratory (BALT), digestive (GALT),
and lymphoid tissue associated with genitourinary