Term
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Definition
Thermoregulation
Protection
Retardation
Excretion
Storage
Synthesis
Reservoir |
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Term
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Definition
| holding back, outer layer of epidermis holds in water |
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Term
| 4 main cell types of Epidermis |
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Definition
Keratincytes
Melanocytes
Langerhans
Merkel |
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Term
| the tissue in Epidermis is... |
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Definition
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Term
| Deepest layer of cells and what happens there |
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Definition
| Stratum Basale - home to dividing cells |
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Term
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Definition
| the process by which epidermal cells die as they migrate up...they flatten out and become squamous shaped. |
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Term
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Definition
| Protects the underlying layers of skin |
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Term
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Definition
| cells that produce pigamnet, (deals with touch sensations?) ..don't know what notes mean |
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Term
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Definition
| an area where fluid builds up |
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Term
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Definition
| areas of constant rubbing, cells stop sloughing here - builds up and becomes thick skin |
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Term
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Definition
| passive sweating (500 mL a day) |
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Term
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Definition
| cellular death - genetically programmed death |
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Term
| Layers of Epidermis bottom to top |
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Definition
Stratum basale
Stratum spinosum
Stratum granulosum
Stratum lucidum
Straum corneum |
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Term
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Definition
deepest layer, where Epidermal Stem Cells mature into Keratinocytes (EGF)
1-5 layers deep, ridges which form finger prints |
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Term
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Definition
spinoum=thornlike
8-10 cells thick
Melanin is absorbed by phagocytosis/cytocrine secretion
Langerhan cells |
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Term
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Definition
little grain
3-5 cells thick
cells begin to die here due to distance from vascular rich dermis
cells start to fill up with keratin
barrier againt light, heat, and bacteria |
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Term
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Definition
thick skin
clear
3-5 layers of cells
only found in thick skin
support and protection
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Term
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Definition
horny
25-30 layers of cells
keratinization complete
cells are flattened, dead and shed
dry to prevent bacterial growth
life span= 2-4 weeks
water resistant NOT water proof |
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Term
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Definition
| connective tissue (dense irregular) as well as Collagen and Elastic Fibers and many other cells...Macrophages, Fibroblasts ad extensions of cells - nerves |
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Term
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Definition
fat, AKA hypodermis
insulation/protection
adiposcytes |
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Term
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Definition
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Term
| the lunula is where......... |
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Definition
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Term
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Definition
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Term
| color is caused by what factors? |
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Definition
genetics
melanin from melanocytes
pigament - trichosiderin |
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Term
the Sebaceous Gland is associated with what?
What does it do? |
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Definition
associated with hair follicles and secretes sebum which waterproofs and moisturizes hair shafts
also known as holocrine gland |
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Term
|
Definition
Sweat Glands
merocrine eccrine deals with ody temperature
or apocrine - temperature, stress, sexual arousal |
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Term
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Definition
| modified sweat glands that secrete wax in the ear canal |
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Term
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Definition
| Modified sweat gland that secretes milk;) |
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Term
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Definition
Proper temperature is vital, skin plays a major role with hypothalamus controlling it, active cells play a role (heart/skeletal muscles)
Heat is lost from skin radiation so body respnds to excessive heat by dilation of dermal blood vessels
excessive cooling by constricting dermal blood vessels - shivering |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| consist of loose connective tissue contains capillaries and the sensory neurons supplying the surface of the skin |
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Term
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Definition
| consist of interwoven meshwork of dense irregular connective tissue |
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Term
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Definition
| (properties) the water content of thes skin also helps maintain its flexibilty and resilience |
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Term
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Definition
| thickened area of scar tissue |
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Term
| germinative cell activity |
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Definition
| prone to injury and skin infection when decreases |
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Term
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Definition
epidermis thins
langerhan cells decrease - Melanocyte activity decreases
Glandular activity decreases, skin gets dry
blood supply to dermis is reduced and sweat glands become less active..lose body heat
dermis becomes thinner and alastic fiber network decreases in size |
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Term
| 4 steps in Integumentary repair |
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Definition
1. Bleeding occurs at injury site and mast cells trigger inflammation
2. A scab forms, cells from Stratum germinative migrate into the wound to start growing new skin. Phagocytes invade and clot forms
3. Fibroblasts begin to produce scar tissue and epidermis keeps growing
4. Scab has been shed and the epidermis is complete. Fibroblasts continue to lay down scar tissue and shallow depression that marks the injury site will fill in. |
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Term
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Definition
| weird skin abnormalities, Michael Jackson |
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Term
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Definition
eyelashes, eyebrows, hair on head,
longer, heavily pigmented, much more coarse |
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Term
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Definition
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Term
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Definition
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Term
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Definition
most common sweat gland
end at pore
main function is thermoregulation
starts functioning shortly after birth |
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Term
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Definition
mostly in armpit
starts to function at puberty
odorless but interacts with bacteria |
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Term
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Definition
Inflammation
blood vessels dilate and become more permeable
clots form scabs which are filled by fibroblasts then connective tissue is created |
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Term
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Definition
| accumulation of pus in an enclosed tissue space |
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Term
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Definition
| destroy injured cells and then attack surrounding tissues |
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Term
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Definition
| the permanent replacement of normal tissue by fibrous tissue |
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Term
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Definition
uncontrolled growth of abnormal cells arising in the squamous cells
caused by sun exposure
starts outside then goes deeper |
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Term
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Definition
unrepairable DNA damage
most dangerous type of skin cancer
melanin protects deeper layers of skin
Too much sun can cause growths to become cancerous |
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Term
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Definition
Common Skin cancer
top layer of epidermis
grows slowly and is non fatal
occurs on skin exposed to sun a lot
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