Page 40 - Differential Diagnosis in Small Animal Cytology, The Skin and Subcutis

VetBooks.ir 5 Skin and Subcutis Anatomy

5.1 Main Components of the Skin and Subcutis

1
2
3

EPIDERMIS 4

Arrector DERMIS
pili
muscle
Hair
follicle
Melanocytes
SUBCUTIS

Sebaceous Sweat
gland gland
Merkel cells

Histiocytes
Fig. 5.1. Anatomy of the skin. (1) Stratum corneum; (2) Stratum granulosum; (3) Stratum spinosum; (4) Stratum
basale.

Epidermis
The epidermis is mostly composed of keratinocytes. It also contains melanocytes, Langerhans
cells (histiocytes) and pressure-sensing Merkel cells. It is formed of four layers:

• Stratum corneum
• Stratum granulosum
• Stratum spinosum
• Stratum basale

© Francesco Cian and Paola Monti 2019. Differential Diagnosis in Small Animal Cytology 27
(F. Cian and P. Monti)