B,asjc
1.
Structure of the Skin
Complete the following statements by writing the appropriate word or phrase on &e correspondingly numbered blank
The two basic tissues of which the skin is composed
are dense connective tissue, which makes up &e dermis,
, which forms the epidermis. Most cells of the
. The protein
makes the dermis
eoiderrnis are
toiigh'and leatherlike. The specialized cells that produce
the-pigments th4 gntribute to skin color are called 4
and I
2
1.
,)
3
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4.
2.
Fom protective functions of the skin are
3.
Using the key choices, choose all responses that apply to the following descriptions.
Key:
saaqrm lucidum
statumbasale
strafumcorneum
statum graoulosttm
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reticular layer
epidermis (as awhole)
dermis (as a whole)
stratum spinosum
papillary layer
'
Iayercontaining sacs filled with fatty materiat or keratin subunits
dead cells
themoresuperficialdermisrayer
4.
avascurarregion
5.
major skin area where derivatives (nails and hair) reside
p;
epideqpat region'exliibiting the most mitoses
7.
most superficial epidermal layer
mrdant
9.
*nfr-arm ('qr*ZU*r<
10.
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3.
elastic and
col
lagenic f,rbers
region where rnelangcytes arc most likgly to be found
accounts for mosrof the epidermis
Review Sheet
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68
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Review Sheet
4.
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diagrarn of skin'
indicated in the accompanying
Label the skin structures and areas
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stafi)nth3'419(laYers)
Dormal
Papillae
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Bbod vessel
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elsewhere in the body?
(but is not a secretion) to play a role
is manufactured in the skin
Pressure" relate to formation of
Color Due to Continuous Exte rnal
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J..ottltotulcers?(Useyourtextbookilnecessary'' , i
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How did tbe activity "Vrsualizing 911^C"t-.i1:fn
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rearned abour skin srructure,
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69
Review Sheet
What was demonstrated by the two-point discrimination test?
TWo questions regalding general sensation are posed below. Answer each by placing your response in the appropriately numbered blanks to the right-
1-2. Which rwo body areas tested were most sensitive to
Souch?
3-4. Which two body areas tested were the least sensitive to touch?
I--2-
34.
10. Define adaptation of sensory receptors:
to all vigorous stimuli, whether
receptors do not adapt. Why
12. Imagine yourself without any cutaneous
Appendages of
1.
th(
Wiymight
bb very dangerous?
/219//
Skin
Using the key choices, respond to the following descfiptions. (Some choices may be used more than once.)
Key:
arrector pili
cutaneous
hair follicle
hair
sebaceous glands
receptors
nail
sweat gland-apocrine
sweat gland--+ccritre
l.
Acne is an infection of a(n)
2.
Structure that houses a hair.
3.
More numerous variety of perspiration gland that produces a secretion containing wate! salts, and vitamin C; activated by rise in temperature.
Sheath formed ofboth epithelial and connective tissues.
Type of perspiration-producing gland that pmduces a secretion containing
proteins and faS in addition to water and salts.
'L^futt^t,
everywhere
TFound
on body except palms of hands and soles of feet.
Primarily dead/keratinized cells.
Specialized struchres that respond to environmental stimuli.
Its secretion conthins cell fiagments.
"Sports" a lunula and a cuticle.
70
Review Sheet
L
How does the skin help to regulate body temperaure? (Describe two different mechanisms.)
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ran t Mt h*Wn-r,/" ilt ur fr lJo
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Several stsuctures or skin reglons are letteied in the photomicrograph below. Ident'r& each by marching its letter with the
propriate description that follows.
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adipose cells
hair follicle
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demis
hair shaft
(_
epidermis
C
sloughingsfatumcorneumcells
Plottlng the Distribution of Sweat Glands
1.
With what substance in the bond paper does the iodine painted on the skin react?
2.
Which skin arca---the forearm or palm of hand-ias more sweat glands?
Which other body areas
3.
woul( iftested
prove to have a high density of sweat glands?
\[/hat organ system controls the activity of the eccrine sweat glands?
Cred
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Marian Rice
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PHOTOGRAPlII
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