Name _______________________________________________ Chapter 5 Quiz Show – 26 Questions
1. Melanocytes reside in which layer of the epidermis?
a.
b.
c.
d.
stratum spinosum
stratum lucidum
stratum granulosum
stratum basale
2. Eating squash and carrots can turn the skin of lighter individuals orange due to
the ingestion of :
a.
b.
c.
d.
melanin.
vitamin
vitamin
carotene.
3. Which skin cancer originates in the deepest layer of the epidermis?
a.
b.
c.
d.
squamous cell carcinoma
malignant adenoma
basal cell carcinoma
lymphoma
4. Where would cyanosis be most apparent during a sustained reduction in
circulatory supply?
a.
b.
c.
d.
lips and ears
in the popliteal fossae
beneath the nails
lips, ears, and beneath nails
5. Which of the following organs converts a precursor molecule into calcitriol, a
hormone that is essential for calcium and phosphate absorption?
a.
b.
c.
d.
kidneys
liver
adrenals
thyroid
6. Which fiber type extends from the dermis into the superficial papillary layer, as
well as into the deeper hypodermis?
a. elastic fibers
b. reticular fibers
c. adipose fibers
d. collagen fibers
7. Subcutaneous injections are made in the:
a.
b.
c.
d.
reticular layer of the dermis.
papillary layer of the dermis.
stratum basale of the epidermis.
hypodermis.
8. The hypodermis consists of which of the following?
a.
b.
c.
d.
loose connective tissue
dense regular connective tissue
loosely packed epithelial tissue
dense irregular connective tissue
9. Which layer consists of an interwoven meshwork of dense, irregular connective
tissue?
a.
b.
c.
d.
stratum basale
reticular layer of the dermis
stratum corneum
papillary layer of the dermis
10. Which of the following statement(s) regarding the hypodermis is/are true?
a.
b.
c.
d.
The border between the dermis and hypodermis is distinct.
It stabilizes the position of the skin relative to skeletal muscles and other organs.
It does not permit independent movement.
All of the statements are true.
11. Cells found in the stratum basale, which send cytoplasmic processes between
epithelial cells, are called:
a.
b.
c.
d.
keratinocytes.
granule cells.
cells of Langerhans.
melanocytes.
12. In which layer of the epidermis do cells stop dividing and start making large
amounts of keratin?
a.
b.
c.
d.
stratum lucidum
stratum spinosum
stratum granulosum
stratum corneum
13. Which stratum of the epidermis consists of 15-30 layers of flat, dead cells
connected by desmosomes?
a.
b.
c.
d.
stratum spinosum
stratum corneum
stratum basale
stratum granulosum
14. The superficial ridges that overlie the dermal papillae.
a.
b.
c.
d.
increase friction only.
increase skin surface area only.
provide a barrier to microorganisms.
increase friction and increase skin surface area.
15. The stratum granulosum consists of cells that have stopped dividing and are
producing large amounts of:
a.
b.
c.
d.
melanin.
keratin.
carotene.
melanin and keratin.
16. ________ are coiled tubular glands that discharge their secretions directly onto the
surface of the skin.
a.
b.
c.
d.
Apocrine sweat glands
Ceruminous glands
Merocrine sweat glands
Ceruminous and merocrine sweat glands
17. Contraction of the arrector pili muscles results in secretion from which gland
type?
a.
b.
c.
d.
sebaceous glands
apocrine glands
merocrine glands
sudoriferous glands
18. What is/are the function(s) of perspiration?
a.
b.
c.
d.
excretion of water and electrolytes
lowering of body temperature
dilution of harmful chemicals
All of the answers are correct.
19. Human adult skin normally possesses how many merocrine sweat glands?
a.
b.
c.
d.
2 to 5 million
100 to 200 million
150,000 to 400,000
500,000 to 1 million
20. Acne results from the blockage of ducts in which glands?
a.
b.
c.
d.
merocrine sweat glands
sebaceous glands
apocrine sweat glands
None of the answers is correct.
21. A burn injury in which all epidermal and dermal cells are killed is classified as:
a.
b.
c.
d.
first-degree.
second-degree.
third-degree.
partial-thickness.
22. Which wound type heals most quickly?
a.
b.
c.
d.
abrasions
scrapes
incisions
abrasions and scrapes
23. During wound repair, which cells divide to produce mobile cells that invade the
deeper area of injury?
a.
b.
c.
d.
melanocytes and macrophages
macrophages and keratinocytes
keratinocytes and melanocytes
fibroblasts and connective tissue stem cells
24. During wound repair, cells from which layer rapidly divide and begin to migrate
along the wound periphery to replace missing epidermal cells?
a.
b.
c.
d.
stratum lucidum
stratum spinosum
stratum basale
reticular layer
25. Calluses form on the palms after manual labor due to:
a.
b.
c.
d.
dissolution of the scab.
cells of the stratum basale dividing more rapidly.
thickening of the epithelium.
cells of the stratum basale dividing more rapidly and thickening of the
epithelium.
26. What is the correct order of events in skin repair?
1 - Fibrin clot disintegrates, and phagocytic activity at the site ends.
2 - Fibroblasts continue to create scar tissue that will elevate the overlying
epidermis.
3 - Cells of the stratum basale migrate along the wound periphery, and clotting
partially isolates the region.
4 - Bleeding occurs at the injury site, and mast cells trigger an inflammatory
response.
a.
b.
c.
d.
4-3-1-2
2-1-3-4
4-3-2-1
4-1-3-2