Q - Chapter 4

Question 1

1. Separations or less dense regions between bundles of collagen fibers in the dermis form

a) friction ridges
b) cleavage lines
c) flexure lines
d) tension lines

Answer 1

b) cleavage lines

Question 2

2. Which type of skin cancer appears as a scaly reddened papule and tends to grow rapidly and metastasize?

a) melanoma
b) squamous cell carcinoma
c) basal cell carcinoma
d) adenoma

Answer 2

b) squamous cell carcinoma

Question 3

3. Several layers of keratinocytes are unified by desmosomes. Cells contain thick bundles of intermediate filaments made of pre-keratin

a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum

Answer 3

b) stratum spinosum

Question 4

4. Most superficial layer; 20-30 layers of dead cells, essentially flat membranous sacs filled with keratin. Glycolipids in extracellular space.

a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum

Answer 4

d) stratum corneum

Question 5

5. Typically one to five layers of flattened cells, organelles deteriorating; cytoplasm full of lamellar granules (release lipids) and keratohyaline granules

a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum

Answer 5

c) stratum granulosum

Question 6

6. Deepest epidermal layer; one row of actively mitotic stem cells; some newly formed cells become part of the more superficial layers. See occasional melanocytes and dendritic cells.

a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum

Answer 6

a) stratum basale

Question 7

7. The outermost layer of the skin is the

a) stratum basale
b) stratum spinosum
c) stratum granulosum
d) stratum corneum

Answer 7

d) stratum corneum

Question 8

9. The order in which a needle would pierce the epidermal layers of the forearm is

a) corneum, spinosum, granulosum, basale
b) basale, spinosum, granulosum, lucidum, corneum
c) granulosum, basale, spinosum, corneum
d) corneum, granulosum, spinosum, basale

Answer 8

d) corneum, granulosum, spinosum, basale

Question 9

9. A dendritic or Langerhan cell is a specialized

a) squamous epithelial cell
b) phagocytotic cell
c) nerve cell
d) melanocyte

Answer 9

b) phagocytotic cell

Question 10

10. Which cell functions as part of the immune system?

a) keratinocyte
b) melanocyte
c) dendritic cell
d) tactile cell

Answer 10

c) dendritic cell

Question 11

11. Which of the following is not part of the skin’s nervous system?

a) Pacinian corpuscle
b) Merkel cell
c) Meissner’s corpuscle
d) dendritic cell

Answer 11

d) dendritic cell

Question 12

12. Its central core, consists of large cells and air spaces. The only part of the hair that contains soft keratin, is absent in fine hairs.

a) Medulla
b) Cortex
c) Cuticle
d) Pigment

Answer 12

a) Medulla

Question 13

13. It is formed from a single layer of cells overlapping one another like shingles on a roof. This arrangement helps separate neighboring hairs so the hair does not mat.

a) Medulla
b) Cortex
c) Cuticle
d) Pigment

Answer 13

c) Cuticle

Question 14

14. What is the first threat to life from a massive third-degree burn?

a) infection
b) catastrophic fluid loss
c) unbearable pain
d) loss of immune function

Answer 14

b) catastrophic fluid loss

Question 15

15. Are largely confined to the axillary and anogenital areas. In spite of their name, they are merocrine glands, which release their product by exocytosis.

a) Apocrine sweat glands
b) Eccrine sweat glands
c) Sebaceous glands
d) Reticular glands

Answer 15

a) Apocrine sweat glands

Question 16

16. The ABCD rule is helpful clinically in

a) recognizing skin melanoma
b) estimating the extent of a burn
c) preventing acne
d) diagnosing psoriasis

Answer 16

a) recognizing skin melanoma

Question 17

17. An abnormal skin tone usually signifies a liver disorder, in which yellow bile pigments accumulate in the blood and are deposited in body tissues.

a) erythema
b) pallor
c) jaundice
d) bronzing
e) bruising

Answer 17

c) jaundice

Question 18

18. Skin may indicate embarrassment (blushing), fever, hypertension, inflammation, or allergy.

a) erythema
b) pallor
c) jaundice
d) bronzing
e) bruising

Answer 18

a) erythema

Question 19

19. An arrector pili muscle

a) is associated with each sweat gland
b) can cause a hair to stand up straight
c) enables each hair to be stretched when wet
d) provides new cells for continued growth of its associated hair

Answer 19

b) can cause a hair to stand up straight

Question 20

20. Which of the following is not an epidermal derivative?

a) hair
b) sweat gland
c) sensory receptor
d) sebaceous gland

Answer 20

c) sensory receptor

Question 21

21. The epidermis provides a physical barrier due largely to the presence of

a) melanin
b) carotene
c) collagen
d) keratin

Answer 21

d) keratin

Question 22

22. Skin color is determined by

a) the amount of blood
b) pigments
c) oxygenation level of the blood
d) all of these

Answer 22

d) all of these