Epidermis - The outer most layer of the integument, Dermis - The greatest portion of the integument, responsible for structural strength. , Dermal Papillae - Bumps which cement the epidermis and dermis together, Hypodermis - Thick layer which contains touch receptors responsible for heavy pressure, Planum Nasale - Top of nose, Arrector Pili Muscle - Attached to each hair follicle, allows hair to stand up straight, Melanocyte - Pigment producing cells, Keratinization - Process in which old cells are replaced at the same rate as new cells are being produced, Sebaceous Glands - Produce oil which empties out onto the hair follicle, Sweat Glands - Help to cool the body down through evaporation , Tail Glands - Assist animals in identification of one another, Demodex mite - Naturally found on dogs in small numbers. Become a problem when overpopulated., Mange mite - Extremely contagious, causes inflammation of the dermis and epidermis by tiny parasite which lives in skin., Integument - Largest organ in the body, capable of repairing itself., Medulla - The innermost central core of hair., Pigmentation - The presence of absence of melanin. The more of it, the darker the animal's complexion., Hair shaft - Visible portion of the hair, Hair Follicle - Anchors the hair and extends from the epidermis to the dermis, Hair Bulb - Deepest part of the hair follicle, Hair Papilla - At the base of the hair bulb, contains rapidly dividing keratinocytes for growth.,

Animal Integumentary System

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