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Ch. 10 Skin Deep
Veterinary Medical Terminology
| Term | Definition |
|---|---|
| Integumentary System | the skin and it's appendages |
| Epithelial Tissue (Epithelium) | what the skin is composed of |
| Cutane/o, Derm/o, Dermat/o, -derma | meaning "skin" |
| Dermatology | the study of skin |
| Epidermis | outer layer of skin, several layers thick and no blood vessels |
| epi- | meaning "above" |
| -dermis | meaning "skin" |
| Squamous Epithelium | composed of flat, platelike cells |
| Keratin | protein that provides skin with it's waterproofing properties |
| Kerat/o | Meaning "horny, cornea, and keratin" |
| Melanocytes | cells that produce and contain a black pigment |
| Melanin | black pigment found in cells |
| melan/o | meaning "melanin, or black, or dark" |
| Albinism | the absence of normal pigmentation |
| Dermis (Corium) | layer of skin directly deep to the epidermis |
| Stratum Basale (Stratum Germinativum) | deepest or basal layer that continually multiples to replenish cells lost from the epidermal surface |
| Cuboidal | cube-like cells arranged in rows |
| Stratum Spinosum (Prickle, Spinous layer) | Layer immediately superficial to the stratum basale which is the thickest in hairless regions and in areas of high wear and tear |
| Keratinization | the development of the hard protein constituents of hair, nails, epidermis, horny structures, and tooth enamel |
| Desquamation | the process in which cell organelles gradually dissolve |
| Stratum Granulosum | layer immediately superficial to the Stratum Spinosum, cells contain keratin granules in there cytoplasm |
| Stratum Lucidum | layer immediately superficial to the Stratum Granulosum, clear layer because of the accumulation of keratin fibers in cell cytoplasm |
| Statum Corneum (horny layer) | the most superficial layer of the epidermis which, consists of layers of dead, highly keratinized and flattened cells |
| Fibroblasts | fiber producing cells, ex Collagen |
| Perception | the ability to recognize sensory stimuli |
| Tactile Perception | the ability to recognize touch sensation |
| Collagen | tough, flexible, fibrous protein found in skin, bone, cartilage, tendons, and ligaments |
| -gen | meaning to produce) |
| Histiocytes (macrophages) | phagocytes cells that engulf foreign substances |
| Mast cells | cells that respond to insult by producing and releasing histamine and heprin |
| histamine | a chemical released in response to allergens that cause itching |
| Heprine | an anticoagulant chemical released in response to a patient |
| Subcutaneous layer (Hypodermis) | located deep to or under the dermis and is composed of connective tissue |
| Fat (lipid) | adipocytes - fat cells that produce lipids |
| Adip/o | meaning "fat" |
| Sebaceous glands (oil glands) | secrete and oily substance called sebum |
| seb/o | meaning "sebum, or oily substance" |
| Ducts | tubelike passages |
| Ductules | tiny ducts |
| Holocrine glands | secreting cells and their secretions make up the discharge produced |
| Sweat (Sudoriferous) glands | aggregations of cells located in the dermis. |
| Eccrine sweat glands | produce and secret water, salt, and waste (sweat) and are located in various regions depending on the species |
| Apocrine sweat glands | secrete a strong smelling substance onto the hair follicles |
| Hyperthermia | high body temperature |
| Hypothermia | low body temperature |
| Hidrosis | the production and excretion of sweat |
| Hidr/o | meaning "sweat" |
| Anhidrosis | the abnormal reduction of sweat |
| Hyperhidrosis | excessive sweating |
| Ceruminous glands | modified sweat glands that are located in the ear canal |
| Cerumen (earwax) | a waxy substance of varying colors depending on the species |
| Hair | rodlike fibers or dead protein cells filled with keratin |
| Pil/i, Pil/o, Trich/o | meaning "hair" |
| cuticle | one cell layer thick, scaly, outer layer of hair |
| Cortex | the main component of hair several layers thick, responsible for coat color |
| Medulla | the innermost layer of the hair |
| Root | the portion of hair that is below the skin surface and surrounded by a hair follicle |
| Follicles | tubes that hold the hair fibers |
| Arrector Pili | a tiny muscle attached to the hair follicle that causes the hair to stand on end |
| Piloerection | condition of the air standing straight up |
| Fur | short, fine hair |
| Pelt | skin in addition to fur |
| Guard hairs (Primary hairs, topcoat) | long, straight, stiff hairs that form the outer coat, include tail and mane hair, bristly hair of swine, and most fur hair |
| Secondary hairs (undercoat) | finer, softer, wavy hair. includes wool, wavy hair near the skin of rabbits |
| Tactile Hair (Vibrissae) | long ,brittle, extremely sensitive hairs that usually located on the face (ex. cat whiskers) |
| Cilia | thin, short hairs, ex. eyelashes |
| Simple pattern hair growth | guard hairs that grow from separate follicular openings |
| Compound Patter hair growth | Multiple guard hairs that grow from a single follicle, as in dogs |
| Shedding | normal hair loss |
| Walls | usually located dorsal and lateral to the distal phalanx |
| Sole | located ventral to the distal phalanx and usually flaky |
| Foot pads (Tori) | provide cushioning and protection for bones of the foot |
| Digital pads | dogs and cats have them, on the palmar and plantar surfaces of the phalanges |
| Metacarpel/Metatarsal | singular pads located on the palmar and plantar surfaces |
| Carpal pads | located on the palmar surface of each carpus |
| Digitigrade | dogs and cats, because they walk on their toes, with only the digital and metacarpal, and metatarsal |
| Plantigrade | animals with well developed foot pads, walk with phalanges, metacarpel, and metatarals |
| -grade | meaning "GO!" |
| Nails and claws | keratin plates covering |
Created by:
dmweaver
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