Epidermis
Dermis
Hair
Nails
Skin Diseases
Act I
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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?