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Integumentory FOBF Chpt 8

The Integumentory system is composed of? Skin, nail, hair, sebacous glands, cerumenous glands, sudoriferous glands
Sebum is produced by? Sebacous glands
Cerumen is produced by? Cerumenous glands
Sweat is produced by? Sudoriferous glands
Functions of the skin include? 1. flexability 2. waterproof 3. Protects from chemicals and microbs 4. protects against UV light 5. Regulates body temp through evaporation
Epidermis Outer most layer of skin
The Epidermis is composed of? Epithelial cells
Epithelial cells reproduce by? Mitosis
Epithelial cells reproduce at the rate of? 30,000/day
Keratinization The process by which newer epithelial cells push upwards (to the surface) where they slowly necrose
Skin sloughing helps? Rid the body of pathogens
Dermis /Corium 2nd layer of skin
The Dermis/Corium consists of? Connective tissue - Collagenous & elastin fibers
Collagen functions To bind the skin cells together
Embedded in the Dermis/Corium are? 1.Blood vessels 2.Nerves 3.Lymph vessels 4.Hair follicles 5.Sebaceous glands -oil 6.Sudoriferous glands -sweat
Sweat is released through? Ossa - called sudoriferous pores
Hypodermis/Subcutaneous 3rd layer of skin
Subcutaneous abbreviation subQ subCU
The subcutaneous/hypodermis consists mainly of? Adipose tissue - fat
The Hypodermis/subQ attaches? The dermis/corium to the underlying muscles
Fascia Connective fibrous tissue found through out the body
Callus (calluses)-pl Thickend skin caused by excessive amount of abrasion or friction
Skin pigmentation is caused by? Melanin
Albinism A genetic mutation causing an absence of melanin
Dilation of the blood vessels in the dermis cause? 1.Erythroderma 2.Erythema 3.Rubeosis
Causes of Erythema include? 1.Pyrexia -fever 2.Hypertension (HTN) 3.Inflammation 4.Blushing
Cyanosis/Cyanotic A bluish condition caused by: 1.Hypoxia (lack of O2) 2.Hypothermia (cold)
Xanthroderma AKA Jaundic Icterus (kericterus)
Xanthroderma A yellowish/orange discoloration of the skin or sclerae
Xanthroderma is caused by? Excessive hemolysis, erythrocytosis or hyperbilirubinemia
Hair is a characteristic of? Mammals
On humans hair can be found everywhere -except: Palms,soles,glans penis
Each hair is composed of 1. shaft (visible portion) 2. root (found in the epidermal tube) 3. follicle (where mitosis/growth occures)
The average human produces ? hair per/year 7 miles
Arrector Pili muscle A muscle which causes the hair shaft to stand on end - attached to the root
Alopecia Hair loss
Genetics control hair Color, texture, loss
Nail body The visable portion of the nail
Nail bed The surface on which the nail grows
Eponychium Cutical
Onychocryptosis Ingrown or hidden nail
Onychmycosis Nail fungus
Paronychia Inflammation adjacent to the nail
Cicatrix / Cicatrices -pl Scar(s)
Keloid Exaggerated of hypertrophied scar
Ulcer An erosion (wearing away) of the skin or mucous membrane
Decubitus ulcer Bedsore or pressure sore
Decubitus ulcers commonly occur where? Pressure points such as: 1.Coccyx (tailbone) 2.Calcanei (heel bone) 3.Olecranos (elbows) 4.Scapulae (shoulder bones) 5.Occipital bone (posterior cranium) 6.Pelvis (ilia & Ischia)
Ecchymosis /Ecchymotic Black, blue marks caused by bleeding under the skin -also called Hematoma, contusion, bruise
Edema / Edematous Tissue swelling caused by fluid
Pitted Edema Fluid accumilation where indentions occure after light palpation
Eschar(otic) Necotic tissue caused by burn
Macule / macular Pertaining to; flat usually erthematous skin
Papule /papular Pertaining to; a raised skin lesion less than <1cm
Nodule /nodular Pertaing to; a raised skin lesion greater than >1cm
Nevus / nevi Mole or birthmark
Petechia(e) Pinpoint skin hemorrhage
Purpura A combination of Ecchymosis and petechiae (red/black/blue marks)
Pustule / pustular Pertaing to; a papule (<1cm) filled with pus
Abscess / abscesses Collection of pus
Verruca(e) Wart(s)
Pallor Paleness
Vesicle / blister Raised lesion filled w/clear liquid
Bulla Vesicle greater >1cm
Bleb Vesicle less <1cm
Abrasion Mechanical superficial damage to the skin (scrape)
Excoriation Chemical superficial damage to the skin diaper rash)
Cellulitis / dermititis Inflammation of skin cells
Urticaria Hives/Wheals - an indication of allergic reaction
Cyst A lump of thickining of skin
Furuncle Boil - an infection of a hair follicle & adjacent tissue
Gangrene / gangrenous Putrefaction (rot) - caused by tissue necrosis & microbial perliferation
Laceration Tissue that is cut, torn, or ripped
Avulsion Tearing of any part of the body, away from the whole
Xeroderma Dry skin
Ichthyosis Dry, scaly skin
Crustation(s) Scab(s)
Vitiligo Localized loss of skin pigmenation - characterized by milk-white patch's
Carbuncle A cluster of Furuncles (hair follicles)
Created by: adrouillard