epidermis (general)
epidermis cells
dermis
hypodermis
100
this is the most outerlayer of the skin
what is the epidermis?
100
these make up about 90% of epidermal cells and produce keratin. what is the name?
what are keratinocytes?
100
the dermis is made up of these two layers.
what are the papillary layer and the reticular layer?
100
the hypodermis lies beneath this layer of the skin.
what is the dermis?
200
the stratum basale is also called...
what is the stratum germinativum?
200
these cells make melanin, which contributes to skin color and UV protection.
what are melanocytes?
200
The papillary layer consists of this type of connective tissue.
what is loose areolar tissue?
200
the hypodermis connects the skin to these deeper structures.
what are underlying tissues or fascia?
300
the stratum corneum acts as a barrier to these two things
what are water and microorganisms?
300
these cells are part of the immune response and can be damaged by UV light.
what are Langerhans cells?
300
the reticular layer contains dense irregular connective tissue with these two fibers.
what are collagen and elastin?
300
the hypodermis stores large amounts of this tissue type
what is adipose (fat) tissue?
400
this layer is only found in thick skin like palms and soles
what is the stratum lucidum?
400
these are the least numerous epidermal cells and are involved in touch sensation
what are Merkel cells?
400
the dermal papillae interlock with the epidermal ridges to form these.
what are friction ridges (fingerprints)?
400
the three main functions of the hypodermis
what are insulation, padding/shock absorption, and fat storage?
500
this layer marks the boundary between living and dead cells and contains lamellar granules.
what is the stratum granulosum?
500
The spiky appearance of cells in the stratum spinosum is due to this cause.
what is dehydration?
500
the reticular layer houses these four structures.
what are hair follicles, glands, blood vessels, and nerves?
500
blood vessels in the hypodermis play a key role in this process.
what is temperature regulation (thermoregulation)?