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CHAPTER 6 (THE INTEGUMENTARY SYSTEM) REVIEW SHEET (using 6th edition of the textbook)—
No change as listed on the lecture notes:
1. Critically read Chapter 6– pp. 181-187 before “Skin Color” section, Skip Section 6.2 (Hair and
Nails), Critically read sections 6.3 (Cutaneous glands) and 6.4 (Skin Disorders) pp. 195-199 before
“Burns” section
2. Comprehend Terminology (those in bold in the textbook) within the reading scope above
3. Study-- Figure questions, Think About It questions, and Before You Go On (section-ending)
questions (within the reading scope above)
4. Do end-of-chapter questions-- Testing Your Recall— 1-4, 7-12, 15-17; True or False– 1-8, 10
Epidermis-1. What are 5 different types of cells of the epidermis and their respective functions? (p. 183)
2. What are 5 layers of the epidermis in thick skin from superficial to deep? What are their
functions? Can you find the same 5 layers in thin skin? (p. 184)
Dermis-3. List two layers that make up the dermis.
4. Review Table 6.1 (Stratification of the skin and hypodermis) (p. 187)
5. Where are the capillaries and sensory neurons that supply the epidermis located?
Cutaneous glands (Review Table 6.2, p. 197)—
A. Sweat glands-- List some major differences between apocrine and merocrine sweat
glands. Deodorants are used to mask the effects of secretions form which type of skin
gland?
B. Sebaceous glands, ceruminous glands, and mammary glands-- Where specifically that
you can find these glands, respectively? What are their respective functions?
C. Study another information (Ear cleaning guidelines from NPR) (either given separately
or posted on Blackboard)
Skin cancer—
A. What are the three types of skin cancer? Where do they arise from, respectively?
What is the lesion look like for each type of the skin cancer?
B. What is the “ABCD rule” by the American Cancer Society for recognizing melanoma?
Why melanoma is so often fatal?
6. Read Deeper Insight boxes 6.1, 6.2, and 6.4
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YOUR HEALTH
Finally, Guidelines On Cleaning Ears Released
From NPR—Sept. 1, 2008 (Morning Edition)
Some 12 million people a year seek medical treatment for impacted earwax. Now, the
American Academy of Otolaryngology–Head and Neck Surgery Foundation is releasing
clinical guidelines on the management of earwax impaction.
The guidelines suggest that patients and doctors keep in mind that earwax, technically
known as cerumen, is a beneficial, self-cleaning agent with protective properties. It should
be removed only when it builds up to a point where it causes symptoms such as pain or
hearing loss.
Appropriate options for physicians to treat cerumen impaction are:
• cerumenolytic (wax-dissolving) agents, such as water or saline
• irrigation or ear syringing, a procedure that involves a clinician injecting a stream of
water into the ear canal.
• manual removal with special instruments or a suction device
Inappropriate or harmful interventions are:
• inserting cotton-tipped swabs into the ear canal
• oral jet irrigators, such as a Waterpik
• ear candling, a technique that involves inserting a paraffin coated tube into the ear and
then lighting it
There are no proven ways to prevent cerumen impaction, but not inserting cotton-tipped
swabs or other objects in the ear canal is strongly advised. Individuals at high risk, e.g.,
hearing-aid users, should consider seeing a clinician every six to 12 months for routine
cleaning.
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A CONCEPT MAP & PRACTICE OF THE INTEGUMENTARY SYSTEM-- Fill in the blanks. Name: ___________________________________; Score: __________
Integument
is superficial to
Consists of
❶_____________—keratinized stratified squamous
epithelium; lacks blood vessels
Consists of
FIVE TYPES OF CELLS:
Dermis—rich in small blood vessels, many
collagen and other fibers, cutaneous
glands (sweat glands, oil glands, hair
follicles), and nerve endings
FIVE/FOUR STRATA (TOP
TO BOTTOM):
❾________________—
between skin and muscle
Also called
Regions
❷ Mostly _____________
(life span @ 30 days)—
secrete keratin
Stratum corneum—dead
keratinized cells
Dendritic (Langerhans)
cells—immune cells; fight
microbes & pathogens
❹ Stratum _________—
only in thick skin; pale
appearance due to a clear
protein eleidin
❸________________—
produce pigment melanin
❺ Stratum _________—
forms epidermal water
barrier
Stem cells—
undifferentiated cells give
rise to the keratinocytes.
❻ Stratum _________—
the thickest stratum in
most skin; desmosomes
hold cells together
Tactile (Merkel)
cells/Meissner corpuscle—
receptors for touch
Stratum basale (single
layer) -- include
keratinocytes,
melanocytes, stem cells,
and tactile cells
❼____________
(Superficial)
❽____________
(Deeper)
Consists of
Consists of
Consists of
Areolar tissue
Dense irregular
connective tissue
Predominantly
❿__________ tissue
Upward dermal
papillae
interlock with
downward
epidermal
ridges
Striae—stretch
marks due to
torn collagen
fibers
Subcutaneous layer
More areolar
tissue than dermis