and Answers Graded A+
The layers of skin - Correct answer-Epidermis
Dermis
(sometimes hypodermis - a subcutaneous layer)
How many layers are in the epidermis? - Correct answer-5
How many layers are in the dermis? - Correct answer-2
What does the dermis layer connect? - Correct answer-skin to fat and muscle
Desmosomes - Correct answer-intercellular links that hold together the epidermis
layer
what happens when desmosomes break? - Correct answer-we shed our skin tissue
is the epidermis stratified or nonstratified - Correct answer-stratified
what is the shape of the epidermis? - Correct answer-squamous
Keratinization - Correct answer-the process of new cells moving to the surface.
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,it starts because the inner layer undergoes mitosis and the daughter cells move up.
as they move up they lose their nucleus, lose water, and when at the top,
desmosomes break and the skin sheds.
Keratinization in the epidermis has 5 layers. what are they? - Correct answer-1.
stratum corneum
2. stratum lucidum
3. stratum granulosum
4. stratum spinosum
5. stratum germinativum/basale
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Stratum corneum - Correct answer-where the desmosomes break and skin sheds
outermost layer
Stratum lucidum - Correct answer-clear layer
Stratum Granulosum - Correct answer-granular layer
compact and brittle
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, lose nuclei
Stratum Spinosum - Correct answer-spiny/prickly layer
desmosomes hold tissues together b/c it is the first rise from mitosis
Stratum germinativum/basale - Correct answer-Regenerative layer and is most
important because keratinization starts and mitosis occurs here
Stratum germinativum contains what kind of cells? - Correct answer-Melanocytes
that produce Melanin. it produces our skin colour.
lower most layer of the germinativum is called the... - Correct answer-stratum
basale
where is the dermis located and what are other names for it? - Correct answer-
located beneath the epidermis
other names are corium and true skin
what structures are found in the dermis? - Correct answer-blood and lymph vessels,
nerves, muscles, glands, hair follicles
what kind of tissue is the dermis layer? - Correct answer-dense connective tissue
with collagenous fibers and yellow elastin
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