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33 Cards in this Set

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  • Back
The Integumentary system includes...
skin, glands, hair, and nails.
What are the three layers of the skin?
1. epidermis - outer layer
2. dermis - inner layer
3. subcutaneous - underlying anchor layer
What is epidermis?
Stratified squamous epithelium
Which layer of epidermis is only in thick skin?
Stratum lucidum
Which epidermal layer comes off?
The stratum corneum.
Where are the melanocytes located?
stratum basale of the epidermis.
What's the pigment that they make?
The activity of the melanocytes, however, is genetically controlled. A large number of melanin granules results in dark skin; fewer granules result in lighter skin.
What's the protein that makes your skin waterproof?
Keratin
What epidermal layer is next to the dermis?
The stratum basale
What are fingerprints due to?
The papillary layer is the upper layer of the dermis that extends into the epidermis which forms the fingerprints.
What are the other names for the subcutaneous layer?
Hypo dermis or superficial fascia
Where are the sensory receptors?
The dermis
Which layer of the skin gives strength and elasticity?
The dermis
Where's the fat that's associated with the skin?
the subcutaneous layer
What happens when light skinned are exposed to sun light?
Ultraviolet light increases melanocyte activity so that more melanin is produced and skin becomes darker or tanned.
What's the goose bump muscle?
arrector pili
What's another name for cuticle?
Eponychium
What's the other name for sweat gland?
Sudoriferous glands
Which sweat gland are there more of?
Merocrine
Which sweat gland becomes active at puberty?
Apocrine sweat glands
What are the functions of the skin?
1. protection
2. sensory reception
3. regulation of body temperature
4. vitamin D synthesis
How many layers to the epidermis?
4 - 5
What are the layers to the epidermis?
Stratum...
1. basale
2. spinosim
3. granulosum
4. lucidum
5. corneum
What is dermis?
Dense connective tissue
What are the two layers to the dermis?
1. papillary layer
2. reticular layer
What is the reticular layer?
Deep layer that provides strength and resilience to the skin.
Hair:
the shaft
the part of the hair that is visible
Hair:
the root
portion of the hair that is below the surface of the skin
Hair:
hair follicle
houses the root of the hair. hair papilla cells around the area at the base of the follicle is the site for hair growth
protection:
covers the entire body and is waterproof
sensory reception:
the dermis contains sense receptors (nerves)
regulation of the body temp:
normal body temp is 98.6
vitamin D synthesis:
ultraviolet light