Epidermis | Dermis/Hypodermis | Structures Derived from Epidermis | Application | Other |
---|---|---|---|---|
True. The epidermis is vascularized.
The epidermis is the outermost layer of the integument. Is this layer vascularized?
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Blood vessels
Hair follicles Oil glands Sweat gland ducts Sensory receptors Nerve endings
Name at least three structures found in the dermis
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Nails
Hair Exocrine glands of the skin
Give two examples of structures derived from the epidermis
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The ink is put into the dermal layer
Why does the ink from tattoos stay in your skin?
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UV rays
Production of melanin increases with exposure to what?
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Acts as a protective, waterproof barrier.
What is the primary function of the epidermis?
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Areolar and dense irregular connective tissues
What types of tissues make up the dermis?
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Hair bulb: Deep swelling of epithelial cells where hair
originates Hair root Hair shaft
What makes up a hair follicle?
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Each fingerprint is unique, and could then be recognized if recorded
Why do police take a finger print off of each finger?
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Hair matrix
Where does hair production occur?
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Stratum Corneum
Stratum Lucidum Stratum Granulosum Stratum Spinosum Stratum Basale
Name each the five layers of the epidermis.
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Papillary layer and reticular layer
What are the two layers of the dermis?
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Protect distal tips of digits and assist grasping
What is the function of a nail?
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Aluminum salts dissolve forming gel that covers sweat gland
How does an antiperspirant reduce sweat production?
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Provide lubrication that prevents drying of hair and skin
What is the primary function of sebaceous glands?
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Increase friction to provide grip and skin flexibility
What is the primary function of friction ridges?
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Areolar and adipose connective tissues
What tissues make up the hypodermis?
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To assist the body in thermoregulation
What is the function of the Arrector pili?
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Accumulation of sebum in your pores
What causes acne?
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Merocrine: 99% water
Apocrine: proteins and lipids
What are the two different types of sweat glands in the body, and what is secreted by each?
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Keratinocytes
Melanocytes Tactile cells
What three cell types are found in the stratum basale?
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Anchors the skin to other organ systems
Protects underlying structures Stores energy
What are three primary functions of the hypodermis?
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Stratum corneum
Nails are derived from a modified version of which epidermal layer?
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Enzyme needed to produce melanin is non-functional
Melanocytes do not produce melanin White hair, pale skin, pink irises
What causes albinism, and what are some of the characteristics of this condition?
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Protection
Prevention of water loss and gain Temperature regulation Metabolic regulation Immune defense Sensory reception Secretion
What are five of the seven functions of integument?
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