Integumentary Physiology Flashcards

Skin Study

1
Q

Integumentary System Makeup

A

Hair, Nails, Sweat, Oil Glands, Skin

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1
Q

Purpose of your skin

A

Protects your body against infections and extreme temperatures. Maintains your balance of fluids. Synthesizes Vitamin D.

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2
Q

Layers of the Integumentary System

A

Epidermis (top), Dermis (middle), Hypodermis (bottom)

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3
Q

Cells of the Epidermis

A

Keratinocytes, Melanocyte, Langerhans, Merkel

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4
Q

Keratinocytes

A

The building blocks of the tough fibrous protein keratin

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5
Q

Melanocyte

A

Synthesizes melanin, gives skin its color

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6
Q

Langerhans Cells

A

Ingest unwanted invader to the skin

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7
Q

Thick Skin

A

Is the tougher skin on the palms of your hands and soles of your feet. Make up of five layers.

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8
Q

Merkel Cells

A

Combine with nerve endings to create a sensory receptor for touch

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9
Q

Thin Skin

A

Everywhere else but only has four layers.

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10
Q

Five Layers of the Epidermis

A

Stratum Corneum (horny layer), Stratum Lucidum (clear layer), Stratum Granulosum (Granular Layer), Stratum Spinosum (Spiny Layer), Stratum Basale

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11
Q

Purpose of Stratum Corneum

A

Offer basic environmental protection

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12
Q

Purpose of Stratum Lucidum

A

Has a few layers of dead clear Keratinocytes

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13
Q

Purpose of Stratum Granulosum

A

Contains living Keratinocytes

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14
Q

Purpose of Stratum Spinosum

A

Contain filaments that help them hold to each other

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15
Q

Purpose of Stratum Basale

A

Cell factory where new cells are made

16
Q

Two Layers of the Dermis

A

Papillary Layer and Reticular Layer

17
Q

Papillary Layer

A

Composed of a thin sheet of of areolar connective tissue that’s riddled with peg-like projections called dermal papillae.

18
Q

Dermal Papillae

A

Tiny protrusions in the thick layer of skin that from unique ridges that press up through the epidermis to help hands and feet grip surfaces.

19
Q

Reticular Layer

A

Made up of dense irregular connective tissue that holds all the dynamic parts of the dermis.

20
Q

Hypodermis (Subcutis)

A

It consists of mostly adipose tissue (fat). Provides insulation, energy storage, shock absorption, and helps to anchor the skin.