Skin Flashcards
What is the Epidermis?
Composed of keratinized stratified squamous epithelium, it is the outermost layer of the skin.
What is the Dermis?
The deep, connective tissue portion of the skin that contains blood vessels, glands, and hair follicles.
Hair follicle
The region of epi- dermis that has invaginated to accommodate the formation of a hair shaft
Arrector Pili Muscle
Contraction of this muscle pulls the hair to an erect position
Sebaceous (oil) Gland
Produce sebum, which has antibacterial, antifungal and lubricating properties.
Hair Bulb
The bulbous portion of the hair follicle, located within the dermis, that provides the material for hair production
Planum Nasale
The topmost plane of the muzzle in such species as cats, dogs, pigs, and sheep.
stratum basale or basal layer
layer consists of a single row of keratinocytes. It is in thin skin
What is the Hypodermis/Subcutaneous layer
The layer of adipose tissue located beneath the epidermis and dermis that insulates and protects the body.
stratum spinosum or spiny layer
contains several layers of cells which are still actively dividing. Thin Skin
stratum lucidum or clear layer
only found in very thick skin
stratum granulosum or granular layer
is named for having keratohyalin granuales and lamellated granuales Thin skin
stratum corneum or horny layer
outermost layer and dominates the epidermis
Chestnuts
dark brown, found on the inside of each leg at the carpus (knee) of the forearm and at the taurus or hock of the hind leg
Ergots
Similar to Chestnuts, much smaller , often overlooked, because they are usually buried in the long, caudal hairs of the fetlock.
Equine Hoof part one
Equine lower leg
Bovine Horn
Structure of the cat claw
Integument Model
Two types of Sweat glands
Eccrine and Apocrine
Eccrine Sweat Gland
Empty onto surface of skin through a long duct
Apocrine Sweat Gland
Empty into hair follicles
Sebum
Coats the base of the hair and surrounding skin
