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Chapter 15 MCB Questions And Answers Latest 2026 Update!!!

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Chapter 15 MCB Questions And Answers Latest 2026 Update!!!

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Chapter 15 MCB Questions And Answers
Latest 2026 Update!!!

First line of defense Barriers and is nonspecific

Consists of multiple layers of tightly packed
Epidermis
epidermal dendritic cells

Epidermal dendritic cells Phagocytize pathogens

Dermis Contains collagen fibers

Give skin strength and pliability to resist
Collagen fibers
abrasions

Perspiration Secreted by sweat glands

Inhibits growth of pathogens by drawing water
Salt
from their cells

Antimicrobial peptides Sweat glands secret dermcidin

Lysozyme Destroys cell wall of bacteria

Secreted by sebaceous glands, helps keep skin
Sebum
pliable and less likely to break or tear, lowers pH

Lines all body cavities open to the outside
Mucous membranes
environment

Epithelium Thin, outer covering of the mucous membranes

Connective layer Supports the epithelium

Lacrimal apparatus Produces and drains tears

Help protect the body by competing with
Normal microbiota
potential pathogens

Saliva Washes microbes and contains lysozyme

Stomach acid and intestinal secretion Digest and inhibits microorganisms

, Bile Inhibitory to most microorganisms

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