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Epidermis Dermis Hair NailsSkin Diseases
Act I
The epidermis is composed of this primary
tissue type.
What is epithelial tissue?
The outermost 20-25 skin layers of the
epidermis are considered to be the
What is the stratum corneum?
Skin cells divide in this deep layer of
the epidermis
What is the stratum basale?
Forming as a result of too much friction, this structure is
a thickening of the stratum corneum often found on the
palms of the hands or the heal of the foot.
What is a callus?
Epidermal cells fill with this protein as they grow towards
the skin’s surface.
What is keratin?EC – What is this process called?
Primary tissue type that makes up the
dermis.
What is connective tissue?
EC – Can you name the predominant connective tissue
and/or the primary proteins making up the extracellular
matrix of the dermis?
Other than dense connective tissue, name another type of connective tissue that would be found within the dermal
layers.
What are blood vessels/blood?
These structures within the dermis jut up into the
epidermis with the purpose of providing
nutrients and oxygen to the superficial layers of
the epidermis
What are dermal papillae?
In the picture above, this number represents the
dermis.
What is #2?
Often found in pregnant women, these
abnormalities in the skin result from damage to the dermis that can be
seen through the epidermis.
What are stretch marks?
This is the portion of the hair that extends above
the surface.
What is the hair shaft?
EC – Is this tissue living or dead?
This is the portion of the hair that is
located beneath the surface of the skin.
What is the hair root?
Seen above, this is the the origin and production site of
hair. .
What is the hair bulb?
Indicated by #5, this portion of the hair serves as an envelope of sorts and aids in tissue
repair as well.
What is hair follicle/hair follicle
wall?
This is the real pigment responsible
for natural hair color.
What is melanin?
Indicated by #1 above, this is the large, pinkish portion of the nail.
What is the nail body?
Indicated by #2 above, this is the moon-like, white portion proximal to the nail body.
What is the lunula?
This structure is composed of dead
stratum corneum and extra-hard keratin.
What is the nail itself?
This is the place within the nail that is the origin of
growth.
What is the nail matrix?
This is the term given to the layer of living tissue
upon which the nail rests, pun intended.
What is the nail bed?
A very common skin disease affecting
adolescents, it is usually caused by overaction of hormones at puberty.
What is acne?
Seen above, this skin irritation is caused by a
fungal infection and usually results in a circular patch of
itchy, raised, red skin.
What is ringworm?
Caused by the human papilloma virus (there is an STD caused by
a similar virus), this skin condition is contracted by contacting a contaminated surface or infected person.
What are warts?
Typically affected school-age children,
this skin disease causes blisters all
over the body along with fever, headache,
stomach ache and loss of apetite.
What is chicken pox?
A cousin of chicken pox, this is a very painful
mainly because it can damage nerve cells.
What is shingles?
