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Questions and Answers
What is the primary function of the dermis in the skin?
What is the primary function of the dermis in the skin?
- To regulate body temperature
- To provide strength and elasticity to the skin (correct)
- To create a protective barrier against pathogens
- To produce melanin
Which component is NOT found in the dermis?
Which component is NOT found in the dermis?
- Nerves
- Sebaceous glands
- Epidermal cells (correct)
- Blood vessels
Which type of fiber is NOT part of the composition of the dermis?
Which type of fiber is NOT part of the composition of the dermis?
- Elastin fibers
- Elastic fibers
- Keratin fibers (correct)
- Collagen fibers
What does the papillary dermis primarily do?
What does the papillary dermis primarily do?
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Which sublayer of the dermis contains more fibers and supports the dermis?
Which sublayer of the dermis contains more fibers and supports the dermis?
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Study Notes
Dermis
- The dermis is the thickest layer of skin, located beneath the epidermis.
- It is primarily composed of fibrous, elastic tissue, providing strength and flexibility to the skin.
- The dermis is responsible for nourishing the epidermis through electrolyte and water transfer at the dermoepidermic union.
- Major components include: blood vessels, nerves, hair follicles, and sebaceous glands.
- The dermis has two sublayers:
Papillary Dermis
- The superficial layer of the dermis.
- Responsible for nourishing the epidermis.
Reticular Dermis
- Contains a higher concentration of fibers compared to the papillary dermis.
- Provides structural support to the dermis.
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