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12 Cards in this Set
- Front
- Back
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Stratum Corneum
1st layer of epidermis |
Full of keratin
Dead cells Waterproofing |
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Stratum Lucidem
2nd layer of epidermis |
Clear layer
No nuclei Protect against UV rays |
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Stratum Granulosum
3rd layer of epidermis |
Bundles of keratin
Cells continuing to build up keratin |
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Stratum Spinosum
4th layer of epidermis |
Thickest layer
Keratinization begins |
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Stratum Basale
5th layer of epidermis |
Regenerative layer
Cells undergoing mitosis |
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Papillary Layer
1st layer of dermis |
Loose areolar connective tissue
Fills dermal papillae Helps keep layers of skin on one another |
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Reticular Layer
2nd layer of dermis |
Dense irregular connective tissue
Collagen fiber Strength in multiple directions |
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Subcutaneous Layer
Not considered skin |
Adipose and areolar loose connective tissue
Energy reservoir Helps bind to underlying fascia layer Ability to preserve heat in the body |
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3 Types of hair and functions
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Lanugo- fetus hair
Vellus- covers almost entire body Terminal- head, eyebrows |
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Characteristics of nails and their Functions
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Derived from epidermis and are keratinized cells
Assist with grasping objects Protection |
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Functions of hair
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Protection from sun
Heat retention- beard Sensory receptor- root hair plexus that wrap around and allow for sensory reception |
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Skin colour
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Melanocytes
Melanin is a pigment-producing cell that is stored in melanocytes |
