6-1

Cell Types and Layers of the of the Epidermis

Figure 6.3

Dermal blood vessels

Tactile cell

Melanocyte

Dead keratinocytes

Exfoliatingkeratinocytes

Living keratinocytes

Dendritic cell

Stem cell

Dermis

Stratum lucidum

Stratum basale

Stratum granulosum

Stratum spinosum

Stratum corneumSweat pore

Tactile nerve fiber

Dermal papilla

Sweat duct

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6-2

Cell Types and Layers of the of the Epidermis

Figure 6.3

Dermal blood vessels

Tactile cell

Melanocyte

Dead keratinocytes

Exfoliatingkeratinocytes

Living keratinocytes

Dendritic cell

Stem cell

Dermis

Stratum lucidum

Stratum basale

Stratum granulosum

Stratum spinosum

Stratum corneumSweat pore

Tactile nerve fiber

Dermal papilla

Sweat duct

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6-5

Structure of the Skin

Figure 6.1

Sensorynerve fibers

Apocrine sweat gland

Piloerector muscle

Lamellar (pacinian)corpuscle (pressure receptor)

Hair bulb

Motor nerve fibers

Cutaneous bloodvessels

Hypodermis(subcutaneous fat)

Epidermis

Merocrine sweatgland

Hair receptor

Dermal papilla

Blood capillaries

Hair follicle

Sebaceous gland

Hairs

Sweat pores

Dermis

Tactile corpuscle(touch receptor)

6-6

Structure of Hair Follicle

Hair rootBulge

Hair bulb

Hair shaft

Hair receptor

Dermalpapilla

Hair matrix

Sebaceousgland

Apocrinesweat gland

Bloodcapillariesin dermalpapilla

Piloerectormuscle

6-7

Fingernail Structure

Figure 6.10

Free edge

Lunule

Nail plate

Nail body

Nail fold

Nail groove

Nail fold

Nail bed Nail matrix

Eponychium(cuticle)

Nailroot

Freeedge

Nailbody

Eponychium(cuticle)

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