Integumentary

System

• The integument is composed of epidermis,

dermis, adnexal structures (simple and

compound hair follicles, apocrine glands,

eccrine glands, sebaceous glands, arrector pili

muscles), and the subcutis, as well as nails,

hooves, and claws.

• Stratum corneum

• Stratum lucidum ( Present in hairless skin only)

• Stratum granulosum

• Stratum spinosum

• Stratum basale

Epidermal nonkeratinocytes

Langerhans cells:

Hair follicles

Sweat glands

Perianal glands

• Anal glands 

Dermatohistopathology

Glossary

Acantholysis

Ballooning degeneration

Collagen flame figure

Crust

Flame follicles

Granulation tissue

Pseudohorn cysts

Horn cysts (keratin cysts)

Keratin pearls (horn pearls, squamous pearls)

Pautrier’s microabscess

Bullae

Callus

Comedo

Epidermal collarette

Lichenification

Macules

Papule

Plaque

Pustule

Scale

Erosion

Ulcer

Nodule

Congenital and hereditary

diseases of skin

Ichthyosis

Epitheliogenesis imperfecta

Disorders of pigmentation

Acromelanism