The Integumentary System

Table of Contents

The Integumentary System

Gimme Some Skin: Hairless Chihuahua

Skin: the bare facts

Functions of the Integument

Skin: H & E view

Slice of Skin

Thick and Thin Skin

Skin Factoid

Layers of the Epidermis

Cytomorphosis: a cellular journey of 15 to 40 days

Starting the Trip

The Important Stuff

Stratum Granulosum: vip

Secretions

Keratinocyte: principal cell of the epidermis

Specialized Cells of the Epidermis

Kessel’s Take

Langerhans Cell

Langerhans’ Cells: immunoperoxidase stain

Melanocyte

Merkel’s Cells (or Disk)

Other Sensory Involvement: Note these are dermal

Junction Between Epidermis and Dermis

Epidermal Ridge / Dermal Papillae

Dermis - Epidermis Junction

The Dermis ( a concept)

Embryological Origin

Appendages of the Skin

Hair Data

Blond Hair - cross section (Azan stain)

The Hair Bulb

Closeup of the Hair Bulb

Pilosebaceous Organ - scalp

Pilosebaceous Apparatus

Sectional View of Hair

Hair Raising Facts

More Hair Raising Facts

Nails

Nail Features

Nail Bed

Sweat Gland

Eccrine Sweat Gland

Apocrine Sweat Gland

Secretion and Function Contrast

Sebaceous Gland: holocrine secretion

Medical Comments: see Kessel p 351

References

Email: rblyston@Trinity.edu

Home Page: http://www.trinity.edu/rblyston

Other information:
This material is copyrighted. Please note the references for the images. This material produced for the Spring 1999 Biology 3431 course.

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