Skin Appendages That Protect: Eyelashes, Eyebrows, Nasal Hair, Ear Hair, and Pubic Hair
- Eyelashes: Shield eyes from debris, sweat; trigger blink reflex; distribute tears.
- Eyebrows: Divert sweat/rain from eyes; nonverbal communication.
- Nasal Hair (Vibrissae): Filter large particles, allergens, pathogens from inspired air.
- Ear Hair: Barrier against foreign bodies, insects.
- Pubic Hair: Reduces friction, traps pathogens, may disseminate pheromones.
These specialized hair follicles form a first line of defense at body orifices.
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