The Integumentary System Exam Review
True or False:
For each true statement write true. If the statement is false correct the underlined word and write it in the blank.
1.
____________________ Greater amounts of the pigment carotene are produced when the skin is exposed to
the sun.
2. ____________________ The most abundant protein in dead epidermal structures such as hair and nails is
melanin.
3. ____________________ Sebum is an oily mixture of lipids, cholesterol and cell fragments.
4. ____________________ The oldest epidermal cells in the epidermis are found in the stratum germinativum.
5. ____________________ The externally observable part of the hair is called the root.
6. ____________________ The epidermis provides mechanical strength to the skin.
A. Arrector Pili
B. Pascinian and Meissner’s Corpuscles
C. Hair
1.
D. Sebaceous gland
E. Apocrine Sweat Gland
F. Eccrine Sweat Gland
________ A blackhead is an accumulation of oily material produced by the ___?
2. ________ Tiny muscles attached to hair follicles.
3. ________ Gland that produces a clear liquid used for temperature regulation.
4. ________ Gland that produces a milky secretion that contains proteins and other materials which favor
bacterial growth.
5. ________ Found everywhere on the body except the palms of hands and soles of feet. Primarily consists of
dead keratinized cells.
6. ________ Specialized nerve endings
7. ________ Become more active at puberty
A. Epidermis
B. Dermis
C. Hypodermis
1. ________ Translucent cells containing keratin
2. ________ Dead cells
3. ________ Vascularized
4. ________ Gives rise to hair and nails
5. ________ Contains papillary layer
6. ________ Contains reticular layer
7. ________ Contains stratum basale
8. ________ Fatty tissue used to insulate the body
9. ________ Is firmly anchored to the dermis
10. ________ Anchors skin to underlying organs
A.
B.
C.
D.
Melanin
Keratin
Carotene
Collagen
1.
________ Protects the skin from UV radiation
2. ________ Gives skin a slightly orange tone
3. ________ Keeps skin supple and wrinkle-free
4. ________ Makes up hair and nails
5. ________ Protein used primarily for waterproofing
Explain why a small child can sweat without smelling (and without deodorant):
Explain why males tend to smell worse than females:
Explain the theory on skin color distribution across different latitudes:
Explain why Eskimos are able to survive at high latitudes even with a dark skin tone:
Note: Be able to identify the skin structures!