BIOS 130: Homework for Chapter 5: The Integumentary System
NAME: _______________________________________________
1. Differences in skin color between individuals reflect distinct differences in the number of melanocytes.
a. True
b. False
2. Arrector pili muscles are associated with the:
a. sebaceous glands
b. sweat glands
c. epidermis
d. hair follicles
3.The primary tissues comprising the subcutaneous layer are:
a. epithelial and neural
b. transitional and glandular
c. hyaline and cuboidal
d. areolar and adipose
4. The terms merocrine and apocrine refer to two types of:
a. ceruminous glands
b. basement membranes
c. sweat glands
d. nails
5. Special smooth muscles in the dermis that, when contracted, produce “goose bumps” are called:
a. tissue papillae
b. arrector pili
c. root sheaths
d. cuticular papillae
6. Accessory structures of the skin include:
a. dermis, epidermis, hypodermis
b. cutaneous and subcutaneous layers
c. hair follicles, sebaceous glands, and sweat glands
d. blood vessels, macrophages, neurons
7. An important function of the subcutaneous layer is to:
a. stabilize the position of the skin in relation to underlying tissues
b. provide sensation of pain and temperature
c. adjust gland secretion rates
d. monitor sensory receptors
8. Hair production occurs in the:
a. dermis
b. stratum spinosum of the epidermis
c. hypodermis
d. stratum basale of the epidermis
10. Nail production occurs at an epithelial fold not visible from the surface called the:
a. eponychium
b. desmosome
c. nail root
d. lunula
11. An abscess is best described as:
a. an accumulation of pus in an enclosed tissue space
b. a widespread inflammation of the dermis caused by bacterial infection
c. a necrosis occurring because of inadequate circulation
d. a sore which affects the skin near a joint or projecting bone
12. Because freshwater is hypotonic to body fluids, sitting in a freshwater bath causes:
a. water to leave the epidermis and dehydrate the tissue
b. water from the interstitial fluid to penetrate the surface and evaporate
c. water to enter the epidermis and cause the epithelial cells to swell
d. complete cleansing because the bacteria on the surface drown
13. The protein that permits stretch and recoil of the skin is:
a. collagen
b. elastin
c. keratin
d. melanin
14. The dermis and epidermis are anchored to one another by ridges known as:
a. dermal papillae
b. gap junctions
c. hypodermis
d. melanocytes
15. When exposed to UV radiation, epidermal cells in the stratum basale convert a cholesterol-related steroid into:
a. calcitrol
b. growth factor
c. vitamin D3
16. Skeletal muscle fibers may be located in the:
a. only the hypodermis
b. dermis but not the epidermis
c. epidermis but not the dermis
d. neither in the hypodermis, dermis or epidermis
17. The primary pigments contained in the epidermis are:
a. melanin and chlorophyll
b. xanthophylls and melanin
c. carotene and melanin
FILL-IN
1. The fine “peach fuzz” hairs found over much of the body surface are called __vellus__________________________ .
2. The secretion that lubricates and inhibits the growth of bacteria on the skin is called ___sebum__________________ .
3. What layer of the epidermis are melanocytes found? _________stratum basale_______________________________..
Hair production occurs at the base of a tubelike depression called a ______hair follicle___________________________.
5. Stratum lucidum is only found in ____thick_______________ skin.
6. During a sustained reduction in circulatory supply, the skin takes on a bluish coloration called _cyanosis__________.
7. The cells of the epidermis receive their nourishment from blood vessels found in the
___dermis____________________ .
8. The two routes of transdermal drug application is by ____intercellular_______________________ and
_____transcellular_______________________ permeation methods.
9. Mobile macrophages that are a part of the immune system and found scattered among the deeper cells of the
epidermis are called ______free macrophages (pg 107)_________________________________ .
10. An orange-yellow pigment that normally accumulates in epidermal cells is _____carotene_____________________ .
11. An inflammation of the skin that primarily involves the papillary layer is called ____dermatitis__________________ .
12. When individuals lose their melanocytes, the condition is known as _______vitiligo___________________________ .
13. The papillary layer of the dermis consists of connective tissue called _____areolar__________________________.
14. The kerotinocytes of the stratum corneum are dead skin cells that are free from lipids / protein. (circle)
15. _______intervenous_________________________ is the uptake of the drug into systemic circulation.
16. Fentanyl and nicotine move into the systemic circulation by the route of _______________________ permeation.
17.What layer of the skin is the dye from a tattoo found? _____dermis____________________________________
18. Wrinkles from ultraviolet radiation form prematurely as a result of damage to _____collagen____________________
fibers.
MATCHING: Match the terms in column B with the terms in column A. Use letters for answers in the spaces provided.
Column A
Column B
____F______ 1. Epidermis
a. vitamin D
___G_______ 2. Carotene
b. eponychium
___A_______ 3. Cholecalciterol
c. fluid lost through the stratum corneum
___B_______ 4. Cuticle
d. embryonic hair
___C_______ 5. Insensible perspiration e. fluid lost through the sweat glands
___E_______ 6. Sensible perspiration f. keratinocytes
___D_______ 7. Lanugo
g. converted to vitamin A
True/False: Write true or false in the space provided.
___F________ 1. Melanin breaks down faster in dark-skinned individuals.
___T________ 2. Individuals of any skin color can burn.
___T________ 3. Intracellular space in the stratum corneum is filled with protein.
___F________ 4. Jaundice is a buildup of bile as a result of damage to the small intestine.
___T________ 5. Blood vessels are not found in the epidermis.
___F________ 6. The most painful burn is a third degree (full-thickness) burn.
___T________ 7. Having an inflammatory response is normal after injury.
___F________ 8. The soft, red mass that is produced after the temporary patch is called regenerative tissue. (wound
healing)
Name the signs of inflammation:
Redness, swelling, heat, pain.