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APR > Chapter 5 Integumentary System > Flashcards

Chapter 5 Integumentary System Flashcards

1
Q

Which layer of the skin is composed of a keratinized stratified squamous epithelium?

A

Epidermis

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2
Q

Which pigment secreted by specialized cells in the skin is capable of absorbing ultraviolet light?

A

Melanin

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3
Q

Which epidermal cell has a role in immunity and disease resistance?

A

Intraepidermal macrophages (Langerhan‘s cells)

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4
Q

Which layer of the epidermis is composed of a single row of cuboidal or columnar keratinocytes

A

Stratum basale

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5
Q

Which layer of the epidermis contains layers of flattened keratinocytes that are going through apoptosis

A

Stratum granulosum

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6
Q

What is the layer of the skin that is only present in thick skin?

A

Stratum luciderm

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7
Q

Constant exposure of the skin to friction stimulates the formation of a callus, which is a thickening of what layer of the epidermis?

A

Stratum corneum

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8
Q

What does the process of keratinization involve?

A

Cells that accumulate as a tough fibrous protein that helps protect the skin

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9
Q

Which layer of the skin is composed mainly of dense irregular connective tissue containing collagen and elastic fibers

A

Dermis

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10
Q

Albinism is the inherited condition that is the inability to produce what?

A

Melanin

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11
Q

What are the characteristics of thick skin?

A

Found in palms, soles of feet and fingertips
Does not contain hair follicles
Contains more sweat glands than thin skin
Contains epidermal ridges

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12
Q 
Which of the following structures found in the skin plays an important role in thermoregulation?
A) merkel cells
B) sebaceous glands
C) sweat glands 
D) nails 
E) fingerprints
A

C) sweat glands

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13
Q 
Which of the following structures found in the skin help prevent water loss and inhibit bacterial growth on the surface of the skin?
A) arrector pili 
B) Lunula
C) sweat glands
D) hair follicles
E) oil glands
A

E oil glands

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14
Q

What is the name of the fine non-pigmented hair that covers the body of the fetus?

A

Vellus

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15
Q

What type of exocrine gland is a simple, branched acinar gland connected to a hair follicle?

A

Both sebaceous and sudoriferous

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16
Q 
Which of the following is a mixture of triglycerides, cholesterol, proteins and inorganic salts?
Sweat
Lanugo
Vellus
Sebum 
Mucus
A

Sebum

17
Q

Which type of exocrine gland is a simple, coiled tubular gland that is found throughout almost the entire skin?

A

Eccrine sweat glands

18
Q

In which type of scar does the scar tissue extend beyond the boundary of the injury into normal tissue?

A

Keloid scar

19
Q

Which condition is due to a buildup of bilirubin pigment in the skin?

A

Jaundice

20
Q

Which term refers to the paleness of the skin as seen in patients with shock or anemia?

A

Pallor

21
Q

Which conditions results from androgens inhibiting hair growth in genetically predisposed adults?

A

Male pattern baldness

22
Q

What is the term that refers to an inflammation of the skin characterized by patches of redness, blistering and extreme itching?

A

Eczema

23
Q

What is the term that refers to a hardened and thickened area of skin resulting from persistent pressure and friction

A

Callus

24
Q

What is the term for an irregular tear of the skin?

A

Laceration

25
Q

What is the term for a reddened, elevated and itchy patches of skin commonly caused by emotional stress, physical trauma or certain food allergies?

A

Hives

26
Q

What is the order of layers of thick skin from superficial to deep (to dermis)

A

Corneum, luciderm, granulosum, spinosum, basale

27
Q

What are goose bumps caused by?

A

Action of arrector pili muscles

28
Q

Where is the papillary region and what does it contain?

A

Superficial layer of dermis
Nipple shaped structures that project into epidermis
Contains blood vessels, corpuscles of touch (Meissner’s) free nerve endings

29
Q

Where is the reticular region and what does it contain?

A

Deeper layer of dermis attached to the subcutaneous layer

Contains:bundles of collagen, elastic fibres, fibroblasts, adipocytes, hair follicles, nerves and glands

30
Q

What are the growth cycle stages of hair and how long does each stage last?

A

Growth stage (anagen) 2-6 years
Regression/transition stage (catagen) 10-14 days
Telogen (resting stage) and Exogen (new hair stage) 1-1.5 months

APR (9 decks)

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