Anatomy 812Lab Session 10:

Integumentary SystemSept. 8, 2005

Russell ChowningTabitha HockerCarmen Kiper

Greg Rupp

Slides in this lab:

• #4: Thick skin – human (PTAH)• #3: Thick skin – human (H&E)• #2: Thin skin – human infant finger (H&E)• #65: Meissner’s corpuscles – monkey (H&E)• #95: Rectoanal junction – human (H&E)• #5: Facial skin – human (H&E)• #6: Eyelid – human (H&E)• #15: Ear – human infant (Verhoeff’s stain)• #26: Finger – human infant (H&E)• #66: Meisner’s corpuscles – monkey (H&E, silver stain)• #26 NH: Skin (reduced silver impregnation)

Slide 4: Thick skin – human (PTAH)

4x

10x

Collagen Fibers (stained red)

Elastic Fibers (stained blue-black)

Slide 3: Thick skin – human (H&E)

4x

Dermis

Epidermis

Stratum Corneum

Stratum Lucidum

DermalPapillae

40x…

Slide 3: Thick Skin – human (H&E) – 40x

Stratum Lucidum

Stratum Granulosum

Stratum Spinosum

Stratum Basale

Keratohyalin granules (basophilic)

Keratinocytes

Slide 3: 40x

Mitotic CellsIn Stratum Spinosum

Slide 2: Thin skin – human (H&E)4x

40x

Melanocytes

Merckel CellsorLangerhan’s Cells

Melanin Pigment

Slide 26 – Thin Skin – human infant finger (H&E)

4x

40x

Notice how thin thestratum corneum is, and the absence of a stratum lucidum, as compared to the thick skin seen in slide 3.

Slide 65: Meissner’s corpuscles – monkey (H&E)4x

Next Page (10x)…

40x

Eccrine gland:

Secretory portion(Double layerof cuboidal cells)

2 Pages Hence (40x)…

Slide 65 (cont.)

EccrineGlandDucts

10x

Slide 65 (cont.)

40x

Meissner’sCorpuscles

Slide 95: Rectoanal Junction – Human (H&E)

Rectoanal Junction

4x

10x

Apocrine Duct

Slide 5: Facial Skin – Human (H&E)

4x

Hair Follicle

Sebaceous Gland

Sweat Gland

Slide 5 – Sweat and Sebaceous Glands, 10x

Sebaceous Gland

Sweat Glands

Slide 5 - Hair Shaft, 40xHair Shaft

Hair Root

ExternalRootSheath

InternalRootSheath

Slide 6: Eyelid – human (H&E)4x

40x

External Root Sheath

Internal Root Sheath

Slide 15: Ear – human infant (Verhoeff’s stain)

Sebaceous gland

Melanocytes

Hair Follicle

Elastic Cartilage

10x

Slide 26: Finger – human infant (H&E)

4x

Dense KeratinizedPlate

Slide 66: Meissner’s Corpuscles – monkey (H&E, silver stain)

4x

DenseKeratinizedPlate

Slide 26NH: Skin (reduced silver impregnation (4x)

10xbox

40x box

Slide 26NH – 10x

PacinianCorpuscle

Slide 26NH – 40x

Meissner’sCorpuscle

Slide 65: Thick Skin – monkey (H&E) (10x)

PacinianCorpuscle

Slide 65: 40x

Meissner’sCorpuscle