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16 Cards in this Set

  • Front
  • Back
Components of Integumentary System
Skin
Blood Vessels
Nerves
Glands
Sensory Organs
Hair
Nails
Skin Functions
Prevents dehydration
Prevents infection
Regulates body temperature
Provides sensory information
Absorbs substances
Manufactures Vitamin D
Excretion
Structures of the Skin
Epidermis
Dermis
Subcutaneous
Accessory Structures
Accessory Structures of the Skin
Sebaceous Glands
Meibomian Glands
Sudoriferous (sweat) Glands
Hair
Nails
Epidermis Characteristics
Outermost Portion
Epithelial Cells
No blood vessels
Nourished by capillaries in the dermis
Layers of the Epidermis
Stratum Basale
Stratum Corneum
Stratum Lucidum
Stratum Basale Definition
Skin layer closest to the dermis
Produces new epidermal cells
Stratum Corneum Definition
Outer layer of the epidermis
Stratum Lucidum Definition
Found in thick skin
Layer that resists abrasion
Dermis Characteristics
Considered the "true skin"
Below the epidermis
Ability to stretch extensively
Contains blood vessels and nerves
Accessory structures found in this layer
Subcutaneous Layer Characteristics
Below the dermis
Connects skin to the superficial muscles
Composed of:
Adipose tissue
Loose Connective Tissue
Blood Vessels
Nerves
Nerve endings
Sebaceous Gland Characteristics
Oil glands
Open to hair follicles
Used for lubrication of skin/hair (prevents dryness)
Sudoriferous Gland Characteristics
Sweat glands
Two Types: Eccrine, Apocrine
Modified Sweat Glands: Mammary Glands, Ceruminous Glands, Ciliary Glands
Hair Characteristics
Hair Follicle
Not living (mostly keratin)
Melanocytes-pigments that color hair
Hair Root-portion of hair below the skin
Erector Pili-thin band of involuntary muscle
Characteristics of Nails
Hard Keratin produced in stratum corneum
Nail Root-proximal end of the nail
Nail Matrix-nail growth region
Lunala-proximal nail over thickest portion of growth region
Cuticle-seals space between the skin and nail plate
Determinants of Skin Color
Pigmentation (melanin production)
Quality of circulating blood
Substances in the blood