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Anatomy & Physiology Exam 1
The Integument System: General
9
Anatomy
Undergraduate 2
02/16/2010

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Cards

Term
What are the functions (3) of integument system?
Definition

1) protection

2) body temperature regulation

3) sensation

Term
In what ways does the integument system protect?
Definition

1) chemical barrier

2) physical barrier

3) biological barrier

Term
How does the integument system serve as a chemical barrier as a source of protection? (2)
Definition

1) skin secretions are slightly acidic, so low pH slows growth of bacteria 

2) melanin (in stratum spinosum) protects against UV rays

Term

How does the integument system serve as a physical barrier for protection?

1-skin?

2-glycolipids?

3-hair?

4-eyebrows?

5-nails?

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

Term
What are the biological barriers of integument system for means of protection?
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 

Term
What helps activate the immune system in the integument system?
Definition
Langerhan's cells (found in spinosum)
Term

What helps regulate body temperature in the integument system?

what is the process?

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)

Term

What structures in integument system allow sensation? (5)

where are they found?

Definition

1-merkel discs (stratum basale)

2-meissner's corpuscles (dermis)

3-nociceptors (dermis)

4-thermoceptors (dermis)

5-pacinian corpuscles (dermis)

Term

What type of receptor is:

touch receptor?

pain receptor?

temperature receptor?

pressure receptor?

Definition

-touch: merckel discs, meissner's corpuscles

-pain: nociceptors

-temp: thermoceptors

-pressure: pacinian corpuscles

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