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Questions and Answers
A patient receives a superficial burn that only affects the epidermis. Which layer of the epidermis is primarily damaged?
A patient receives a superficial burn that only affects the epidermis. Which layer of the epidermis is primarily damaged?
- Stratum Basale
- Stratum Corneum (correct)
- Stratum Granulosum
- Stratum Spinosum
Why is the dermis the target layer for tattoo ink?
Why is the dermis the target layer for tattoo ink?
- The dermis contains rapidly dividing cells that fix the ink.
- The dermis contains fibroblasts that encapsulate the ink particles. (correct)
- The dermis is avascular, preventing ink dispersion.
- The dermis has a high rate of cellular turnover.
Which layer of the skin is characterized by dense irregular connective tissue containing collagen and elastin fibers, providing strength and elasticity?
Which layer of the skin is characterized by dense irregular connective tissue containing collagen and elastin fibers, providing strength and elasticity?
- Papillary layer of the dermis
- Stratum Corneum
- Reticular layer of the dermis (correct)
- Hypodermis
How does the papillary layer's structure facilitate immune function within the skin?
How does the papillary layer's structure facilitate immune function within the skin?
Why is the hypodermis often targeted for subcutaneous injections?
Why is the hypodermis often targeted for subcutaneous injections?
Flashcards
Stratum Corneum
Stratum Corneum
Outermost skin layer with dead keratinocytes that slough off as dander, lasting 30-40 days.
Dermis
Dermis
The connective tissue layer beneath the epidermis, containing glands, nerves, and hair roots.
Fibroblasts
Fibroblasts
Cells in the dermis that produce extracellular matrix for tissue repair.
Papillary Layer
Papillary Layer
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Hypodermis
Hypodermis
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Study Notes
Stratum Corneum
- 30-40 day life cycle
- Flattened, enucleated cells
- Contains keratin bundles
- Shed as dander
Dermis
- Connective tissue layer under epidermis
- Houses hair & nail roots, sweat and sebaceous glands
- Nerve endings
- Papillary Layer
- Areolar connective tissue
- Dermal papillae hold dermis to epidermis
- Fingerprints
- Allows leukocyte movement
- Reticular Layer
- Dense irregular connective tissue
- Collagen and elastin fibers provide strength and elasticity
- Waterproofs skin
- Contains touch, pressure and stretch receptors
Hypodermis
- Mostly adipose tissue
- Reservoir for energy
- Thermal insulation (subcutaneous fat)
- Common injection site
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Description
Explore the three primary layers of the skin: Stratum Corneum, Dermis, and Hypodermis. Learn about their unique features, including cell structure, tissue composition, and functions such as protection, insulation, and sensory reception.
