Chapter 5 anatomy

13) Albinism is the inherited inability to produce a) melanin. b) carotene. c) both melanin and carotene. d) keratin. e) creatinine.

A

19) This type of exocrine gland is a simple, branched acinar gland connected to a hair follicle. a) Sebaceous gland b) Sudoriferous gland c) Both sebaceous gland and sudoriferous gland d) None of these answers are correct

A

2) Which layer of the skin is composed of a keratinized stratified squamous epithelium? a) Epidermis b) Dermis c) Hypodermis d) Subcutaneous layer e) Corpuscle

A

26) In the diagram of skin shown below, where is the sebaceous gland? a) C b) D c) E d) F e) H

A

28) In the diagram of skin shown below, which labeled structure generates fingerprints? a) A b) B c) G d) H e) None of these answer choices are correct.

A

3) Keratin a) is a protein. b) is secreted by plasma cells to help protect the body from viruses. c) is made by melanocytes only. d) is both a protein and made by melanocytes only. e) All of these choices are correct.

A

32) In the photomicrograph of a portion of thick skin shown below, which layer is only seen in thick skin? a) A b) B c) C d) D e) E

A

44) Which of the following best describes the events occurring at point A in the diagram of deep wound healing shown below? a) Blood clot is forming. b) New collagen fibers are forming. c) Damaged blood vessels are being repaired. d) Epithelium is migrating across wound. e) Scar tissue is forming.

A

5) Which epidermal cell has a role in immunity and disease resistance? a) Intraepidermal macrophages (Langerhans cells) b) Keratinocytes c) Melanocytes d) Tactile epithelial cells (Merkel cells) e) Podocytes

A

53) Which structures in the figure are sensitive to warmth, coolness and itching? a) A b) G c) F d) H e) J

A

55) Which structure in the figure produces a protein that helps protect the skin and underlying tissues from heat, microbes and chemicals? a) A b) B c) C d) D e) E

A

6) Which layer of the epidermis is composed of a single row of cuboidal or columnar keratinocytes? a) Stratum basale b) Stratum spinosum c) Stratum granulosum d) Stratum lucidum e) Stratum corneum

A

72) "Goose bumps" are caused by a) action of arrector pili muscles. b) secretions from the sudoriferous glands. c) contraction of dermal papillae. d) stimulation of hair root plexus. e) secretions from the sebaceous gland.

A

8) The stratum lucidum a) contains lamellar granules. b) lies just above the stratum basale. c) is the layer used in a skin graft. d) is present only in thick skin. e) can consist of up to 25-30 layers of dead keratinocytes.

D

1) Another name for the subcutaneous layer is a) Dermis b) Epidermis c) Stratum corneum d) Stratum basale e) Hypodermis

E

14) Characteristics of thick skin include: a) Found in the palms, soles of the feet and fingertips. b) Does not contain hair follicles. c) Contains more sweat glands than thin skin. d) Contain epidermal ridges. e) All of these choices are correct

E

43) Which of the labeled cells in the diagram of deep wound healing shown below has phagocytic properties? a) C b) E c) F d) All of these answer choices are correct. e) Both E and F

E

49) Which structures are dermal papillae? a) A b) F c) G d) H e) I

E

58) In the diagram, which layer is the stratum corneum? a) E b) F c) G d) H e) I

E

65) Which of the following terms refers to an inflammation of the skin characterized by patches of redness, blistering, and extreme itching? a) papule b) laceration c) keratosis d) frostbite e) eczema

E

66) Which of the following terms refers to a hardened and thickened area of skin resulting from persistent pressure and friction? a) callus b) blister c) wart d) papule e) fever blister

E

74) Which of the following chemicals does NOT contribute to the color of human skin? a) carotene b) hemoglobin c) pheomelanin d) eumelanin e) melatonin

E

9) Constant exposure of skin to friction stimulates the formation of a callus, which is the thickening of the _____ of the epidermis. a) stratum basale b) stratum spinosum c) stratum granulosum d) stratum lucidum e) stratum corneum

E

18) This is fine non-pigmented hair that covers the body of the fetus. a) Alopecia b) Vellus c) Lanugo d) Papilla e) Lunula

C

48) Which structure is an eccrine sweat gland? a) A b) F c) G d) H e) I

C

52) Which structure in the figure is a receptor sensitive to pressure? a) A b) G c) F d) H e) I

C

54) Which structure in the figure detects touch sensations? a) A b) B c) C d) D e) G

C

57) In the diagram, which layer is the stratum granulosum? a) E b) F c) G d) H e) I

C

62) Which condition is due to a buildup of bilirubin pigment in the skin? a) hirsutism b) pallor c) jaundice d) androgenic alopecia e) erythema

C

7) Which layer of the epidermis contains layers of flattened keratinocytes that are going through apoptosis? a) Stratum basale b) Stratum spinosum c) Stratum granulosum d) Stratum lucidum e) Stratum corneum

C

67) Which of the following terms refers to an irregular tear of the skin? a) abrasion b) papule c) keloid d) laceration e) cyst

D

21) Which type of exocrine gland is a simple, coiled tubular gland that is found throughout almost the entirety of the skin? a) Sebaceous gland b) Eccrine sweat gland c) Apocrine sweat gland d) Ceruminous gland e) None of these answer choices are correct.

B

25) In which type of scar does the scar tissue extend beyond the boundary of the injury into normal tissue? a) Hypertrophic scar b) Keloid scar c) Proliferative scar d) Inhibitory scar e) Granuloma

B

30) In the diagram of skin shown below, where is the arrector pili muscle? a) C b) D c) E d) F e) G

B

50) The corpuscle of touch (Meissner corpuscle) would be found in which region of the skin shown in the figure? File a) B b) D c) E d) J e) None of these answer choices are correct.

B

51) Which letter is pointing to the subcutaneous layer of the skin in the figure? a) C b) E c) B d) J e) I

B

63) Which of the following terms refers to paleness of the skin such as seen in patients with shock or anemia? a) hirsutism b) pallor c) jaundice d) androgenic alopecia e) erythema

B

68) Which of the following terms refers to reddened, elevated, and itchy patches of skin commonly caused by emotional stress, physical trauma, or certain food allergies? a) wart b) hives c) papule d) cyst e) eczema

B

75) From which of the primary germ layers of the embryo does the epidermis of the skin develop? a) Endoderm b) Ectoderm c) Mesoderm d) All of these choices are correct. e) Both endoderm and ectoderm.

B

70) You stepped on a nail. List the sequential layers (or strata) of the epidermis that the nail penetrated through to finally reach the dermis. a) basale, spinosum, granulosom, corneum b) granulosom, spinosum, lucidum, corneum, basale c) corneum, lucidum, granulosom, spinosum, basale d) corneum, granulosom, spinosum, basale e) corneum, granulosom, lucidum, spinosum, basale

C

71) Which of the following is NOT a homeostatic contribution of skin? a) Help provide calcium ions needed for muscle contraction b) Provide sensory input to the brain c) Help activate vitamin B d) Help activate vitamins D e) Thermoregulation

C

20) Which of the following is a mixture of triglycerides, cholesterol, proteins and inorganic salts? a) Sweat b) Lanugo c) Vellus d) Sebum e) Mucus

D

27) In the diagram of skin shown below, where is the apocrine sweat gland? a) C b) D c) E d) F e) H

D

29) In the diagram of skin shown below, where is the reticular region of the dermis? a) E b) F c) G d) H e) A

D

31) In the photomicrograph of a portion of thick skin shown below, which layer is the stratum spinosum? a) A b) B c) C d) D e) E

D

33) In the photomicrograph of a portion of thick skin shown below, which layer is the stratum basale? a) A b) B c) D d) E e) F

D

42) Which of the following best describes the events occurring at point B in the diagram of deep wound healing shown below? a) Blood clot is forming. b) New collagen fibers are forming. c) Damaged blood vessels are being repaired. d) Epithelium is migrating across wound. e) Scar tissue is forming.

D

56) Which structure in the figure produces a pigment that contributes to skin color and absorbs UV radiation? a) A b) B c) C d) D e) G

D

60) In the diagram, which is a melanocyte? a) A b) B c) E d) F e) G

D

64) Which condition results from androgens inhibiting hair growth in genetically predisposed adults? a) hirsutism b) pallor c) jaundice d) male-pattern baldness e) erythem

D