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Anatomy of the Skin: Layers, Cells, Functions, and Glands, Slides of Dental Anatomy
An in-depth exploration of the skin, its layers, cells, functions, and associated structures, including hair follicles, exocrine glands, and sensory receptors. Learn about the epidermis, dermis, and their components, such as melanocytes, langerhans cells, and keratinocytes.
Typology: Slides
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Download Anatomy of the Skin: Layers, Cells, Functions, and Glands and more Slides Dental Anatomy in PDF only on Docsity!
- Organization
- Skin
- Epidermis
- Dermis
- Accessory Structures
- Hair & Hair follicles
- Exocrine glands
- Arrector pili
- Sensory Receptors
- Skin
- Layers beneath the skin
- Subcutaneous layer
- Deep fascia
________________________
- Functions of the Skin
- Protection
- Water-resistance
- Temperature regulation
- Vitamin D synthesis
- Sensations
- Immunity
- Social signaling
- Stratum Germinativum - Stem cells - Melanocytes - Merkel cells
The Epidermis
- S. Spinosum
- “Pre- keratinocytes”
- Melanocytes
- Langerhans cells
The Epidermis
- S. Granulosum
- S. Lucida
- Keratinocytes in both layers
The Epidermis
- S. Corneum
- Dead keratinocytes
The Epidermis
Skin cell-eating mite
The Dermis
The Dermis
- Reticular layer
- Dense irregular CT
- Provides strength and elasticity
The Dermis
- Papillary layer
- Areolar CT
- Contains cap’s and sensory neurons for epidermis
- Arranged as dermal papillae
Pigmentation
• Melanin
• Carotene
• Hemoglobin
Epidermal Derivatives
• Hair Follicles and Hair
• Skin Glands
Hair
- Function
- Protection
- Touch Sensation
- Structure
- Root
- Shaft
- Bulb
Hair
- Hair Follicle
- Sheath of epithelial cells
- Surrounds root
- Merges with bulb
Hair
- Associated structures - Dermal papilla - Sebaceous glands - Arrector pili
Hair
- Growth Cycle
- 2-5 yrs: growth stage
- 2 yrs: resting stage
Skin Glands
- Sebaceous glands - secrete sebum - help to protect hair and skin
Skin Glands
- Merocrine (eccrine) sweat glands - BT control - excretion - protection