Deck 13: Integument

Question 1

A 45-year-old man presents to his dermatologist with a skin condition. The patient was bitten on the leg by a dog and then developed a red, warm, painful, swollen area in the region of the bite. The physician suspects

A) boils
B) impetigo
C) rosacea
D) sebaceous cyst
E) cellulitis

Answer 1

E

Question 2

Melanocytes are located in which of the following layers of the epidermis?

A) stratum corneum
B) stratum lucidum
C) stratum granulosum
D) stratum spinosum
E) stratum basale

Answer 2

E

Question 3

Identify the layer at the arrow tip

A) stratum basale
B) stratum spinosum
C) stratum granulosum
D) stratum lucidum
E) stratum corneum

Answer 3

B

Question 4

The encircled structure

A) is a mechanoreceptor
B) manufactures sebum
C) manufactures a mucous secretion
D) manufactures sweat
E) is the duct of a sweat gland

Question 5

Sebaceous glands are classified as

A) apocrine glands
B) compound glands
C) holocrine glands
D) simple coiled tubular glands
E) mixed glands

Question 6

The structure at the tip of the arrow

A) is a mechanoreceptor
B) manufactures sebum
C) manufactures a mucous secretion
D) manufactures sweat
E) is the duct of a sweat gland

Question 7

A 24-year-old man with AIDS sees his physician because of brown, oval patches that started on his toes and have spread to his face. The physician should suspect

A) Bowen's disease
B) rosacea
C) melanoma
D) squamous cell carcinoma
E) Kaposi's sarcoma

Question 8

A young African American child is taken to his dermatologist by his parents, who are concerned by a lack of pigmentation in some regions of his body. The dermatologist should suspect

A) albinism
B) tinea versicolor
C) vitiligo
D) squamous cell carcinoma
E) melanoma

Question 9

Which of the following statements is not correct concerning skin?

A) melanocytes possess tyrosinase, which is located in the endosomes
B) Merkel cells are mechanoreceptors
C) Langerhans cells are derived from the bone marrow
D) cells of the stratum granulosum possess keratohyaline granules
E) cells of the stratum spinosum possess membrane-coating granules

Question 10

A medical student playing softball chased the ball through a field populated with patches of poison ivy. The student's skin came in contact with the poisonous plant. Which of the following cells processes and presents the plant antigen to initiate the immune response of the skin?

A) T helper cell
B) cytotoxic T lymphocyte
C) plasma cell
D) Langerhans cell
E) T reg cell

Question 11

Which of the following is correct about freckles? They

A) are hyperpigmented spots on the skin
B) are an increased number of melanocytes in the dermis
C) are an increased number of melanocytes in the epidermis
D) fade in the summer
E) darken in the winter

Question 12

Cells of the stratum spinosum are attached to each other by

A) zonulae adherentes
B) zonulae occludentes
C) desmosomes
D) fasciae adherentes
E) hemidesmosomes

Question 13

Which of the following infections of the skin is caused by a Corynebacterium?

A) athlete's foot
B) scalp ringworm
C) jock itch
D) erythrasma
E) scabies

Question 14

A 30-year-old-healthy patient presents to his family physician with a scaly, red, crusty area on his forehead that does not appear to heal. The physician determines that the lesion has increased in size. The physician should suspect

A) sunburn
B) rosacea
C) melanoma
D) squamous cell carcinoma
E) Kaposi's sarcoma