Term
| What are the functions (3) of integument system? |
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Definition
1) protection
2) body temperature regulation
3) sensation |
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Term
| In what ways does the integument system protect? |
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Definition
1) chemical barrier
2) physical barrier
3) biological barrier |
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Term
| How does the integument system serve as a chemical barrier as a source of protection? (2) |
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Definition
1) skin secretions are slightly acidic, so low pH slows growth of bacteria
2) melanin (in stratum spinosum) protects against UV rays |
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Term
How does the integument system serve as a physical barrier for protection?
1-skin?
2-glycolipids?
3-hair?
4-eyebrows?
5-nails? |
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Definition
1-skin continuity, & hardness of keratinized cells limit entry of foreign substances
2-waterproof skin
3-on head-insulation, in nose/ears-trap airborne particles
4-slow sweat flow into eyes
5-protection & cover ends of fingers and toes |
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Term
| What are the biological barriers of integument system for means of protection? |
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Definition
Langerhan's cells and Dermal Macrophages
-Langerhan's cells (found in stratum spinosum) help activate immune system
-Dermal Macrophages (found in dermis) phagocytic cells that defend against microorganisms |
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Term
| What helps activate the immune system in the integument system? |
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Definition
| Langerhan's cells (found in spinosum) |
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Term
What helps regulate body temperature in the integument system?
what is the process? |
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Definition
sweat glands
-begin secretory activity when temp. rises
-when sweat evaporates, it pulls heat away from skin, and body cools (eccrine sweat glands by evaporative heat loss) |
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Term
What structures in integument system allow sensation? (5)
where are they found? |
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Definition
1-merkel discs (stratum basale)
2-meissner's corpuscles (dermis)
3-nociceptors (dermis)
4-thermoceptors (dermis)
5-pacinian corpuscles (dermis) |
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Term
What type of receptor is:
touch receptor?
pain receptor?
temperature receptor?
pressure receptor? |
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Definition
-touch: merckel discs, meissner's corpuscles
-pain: nociceptors
-temp: thermoceptors
-pressure: pacinian corpuscles |
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