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Physiology-Anatomy > Integumentary System > Flashcards

Integumentary System Flashcards

1
Q

What are the two distinct regions of the human skin?

A

Outer epidemis and inner dermis

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2
Q

What part of the skin is composed of stratified squamous epithelial tissue?

A

Outer epidermis

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3
Q

Is a connective tissue that is firmly attached to the epidermis by a basement membrane

A

Inner dermis

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4
Q

Another layer found beneath the skin but is not a part of the skin

major storage site for yna and ja

Connects skin to muscle or bone

A

Hypodermis/Subcutaneous layer/Sub-Q

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5
Q

Is made up of Strata: corneum, lucidum (soles and palms only), granulosum, spinosum, and basale

A

Epidermis

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6
Q

The outermost layer of the skin consisting of 25-30 or more layers of keratinocytes (dead squamous cells filled with keratin)

Waterproof

A

Stratum corneum

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7
Q

Consists of 3-5 rows of dead, flat keratinocytes. Only found in thick skin such as the soles and palms

A

Stratum Lucidum

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8
Q

Consists of 3-5 rows of dying, flattened keratinocytes.

No dividing cells found here

A

Stratum granulosum

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9
Q

8-10 rows of cells (mainly keratinocytes) that are often seen with thorn-like projections caused by tissue preparations in stained slides

A

Stratum spinosum

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10
Q

Deepest layer of the epidermis

Made up of single row of cells attached to the basement membrane

cuboidal or columnar Cells undergo mitotic division to form new keratinocytes

A

Stratum basaleor/Stratum basale/Stratum Germitanivum

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11
Q

Is made up of papillary and reticular layers.

A

(deeper) Dermis

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12
Q

Layer made up of areolar connective tissue

A

Papillary layer

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13
Q

Finger-like projections in the papillary layer that extend into the epidermis

A

Dermal papillae

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14
Q

Genetically determined whorls formed by the dermal papillae that increase surface area, grip and friction.

they produce fingerprints

A

Epidermal ridges

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15
Q

Deeper, much thicker region of the dermis composed of dense irregular connective tissue

A

Reticular layer

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16
Q

Provide skin with strength

A

Collagen fibers

17
Q

Provide skin with elasticity

A

Elastic fibers

18
Q

Composed of columns of dead keratinized cells that are bonded together by extracellular proteins

A

Hair strand

19
Q

Superficial portion of the hair

A

Shaft

20
Q

Part of the hair found deep in the shaft and penetrates the dermis and sometimes the hypodermis

A

Hair root

21
Q

3 layers in the hair and hair root

A

inner medulla, middle cortex, and outer cuticle

22
Q

COmposed of keratinized, tightly packed epidermal cells that cover the dorsal surface of the distal portion of each digit

A

Nail

23
Q

Part of nail that extends past the digit

A

Free edge

24
Q

Part of nail embedded in the fold of the skin

A

nail root

25
Q

Part of nail that is half-moon shaped, whitish proximal area of the nail

A

lunula

26
Q

Secures the nail to the fingertip

Beneath the free edge

A

Hyponychium

27
Q

Narrow band of epidermis that adheres to the nail

A

Eponychium

28
Q

Sweat glands

A

Sudoriferous glands

29
Q

Type of sweat gland that are most common they appear coiled tubular glands which number around 3000 per sq. inch and produce 600 mL of sweat

A

Eccrine sweat glands

30
Q

Type of sweat gland that secrete via exocytosis. Secretions are commonly referred to as cold sweat.

A

Apocrine sweat glands

31
Q

System that consists of the skin and accessory structures such as hair, nails and glands.

A

Integumentary system

32
Q

Means covering

A

Integument

33
Q

Functions of integumentary system

A

Protection, Sensation, Vitamin D Production, Temperature regulation, Excretion

34
Q

New cells form > Push older cells to surface > outermost cells protect cells underneath > deeper replicating cells replace lost cells from the surface

During this cells change shape and chemical composition

A

keratinization

35
Q

Skin subjected to friction, number of layers in the stratum corneum increases producing…

A

Callus

36
Q

Thickened stratum corneum formed in a cone-shaped structure

A

corn

37
Q

Excessive sloughing of stratum corneum cells from the surface of the scalp

A

Dandruff

Physiology-Anatomy (8 decks)

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