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Questions and Answers
How thick is the epidermis?
It can be up to 30 cells thick (5 sublayers of epithelial cells).
What does keratin do for the skin?
Waterproofs the skin & protects the layers below it.
What does melanin produced by melanocytes protect us from?
Harmful UV rays from the sun.
How many times thicker is the dermis compared to the epidermis?
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What does the connective tissue in the dermis allow the skin to do?
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What do collagen and elastin do for our skin?
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Which layer is vascularized and which is not?
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What does the dermis contain?
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What are the functions of the tactile corpuscles?
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What are the functions of the lamellated corpuscles?
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Which corpuscle (tactile or lamellated) is superficial?
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Which corpuscle (tactile or lamellated) is deep?
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Study Notes
Epidermis
- The epidermis can be up to 30 cells thick and is composed of 5 epithelial layers
- Keratin waterproofs the skin and protects the layers below it
- Melanin produced by melanocytes protects us from harmful UV rays from the sun
Dermis
- The dermis is 15 to 40 times thicker than the epidermis
- Connective tissue in the dermis makes the skin more flexible and prevents tears
- Collagen maintains the general health of the skin and elastin increases the elasticity of the skin
- The dermis contains lymph nodes, blood vessels, sweat glands, oil glands, hair follicles, muscle fibers, and nerve fibers
- The dermis is vascularized, but the epidermis is not
Tactile Corpuscle
- Located superficially
- Sensitive to light touch
- Also known as Meissner's corpuscle
Lamellated Corpuscle
- Located deep in the skin
- Sensitive to deep pressure and vibrations
- Also known as Pacinian corpuscle
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Description
Test your knowledge on the layers of the skin, including the epidermis and dermis, as well as the functions of various skin structures like tactile and lamellated corpuscles. Understand how these components protect and support our body's largest organ. This quiz will cover key concepts related to skin anatomy.
