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Questions and Answers
Which region of the skin is the deepest?
What type of cells produce the protein keratin in the epidermis?
Which layer of the epidermis is responsible for drastic changes in keratinocyte appearance?
Which cells in the epidermis produce the pigment melanin?
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Which region of the skin is not technically part of the skin?
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Which layer of the epidermis is firmly attached to the dermis?
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Which cells in the epidermis help activate the immune system?
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Which type of sweat gland is found in the axillary and anogenital areas?
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Which type of sweat gland is found in the palms, soles of the feet, and forehead?
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Which type of sweat gland is found in the external ear canal and secretes cerumen (ear wax)?
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Which type of sweat gland is specialized for milk secretion?
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Which type of gland secretes sebum, an oily holocrine secretion that softens hair and skin?
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Which type of hair is pale and fine, and found in children and adult females?
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Which type of hair is coarse, long, and found in the eyebrows, scalp, axillary, and pubic regions?
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Which layer of the epidermis is responsible for waterproofing and protection from abrasion?
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Which layer of the epidermis is only present in thick skin?
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Which layer of the epidermis contains keratohyaline granules and lamellated granules?
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Which layer of the epidermis contains keratinocytes unified by desmosomes?
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Which layer of the epidermis is the deepest and contains actively mitotic stem cells?
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Which layer of the dermis contains collagen fibers that add strength and resiliency to the skin?
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Which pigment is responsible for dark skin colors?
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Which layer of the skin does squamous cell carcinoma arise from?
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Which of the following is a characteristic of melanoma?
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What is the recommended treatment for melanoma?
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What is the ABCD rule used for?
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What is a characteristic of full-thickness burns?
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What percentage of the body is considered critical if it has third-degree burns?
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Which body part is NOT included in the rule of nines for estimating burn severity?
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What happens to the skin in old age according to the text?
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What is the potential risk associated with decreased numbers of melanocytes and Langerhans' cells?
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Study Notes
Skin Structure and Function
- The deepest region of the skin is the hypodermis.
- Keratin is produced by keratinocyte cells in the epidermis.
- The stratum spinosum layer of the epidermis is responsible for drastic changes in keratinocyte appearance.
Melanin Production
- Melanocytes produce the pigment melanin in the epidermis.
Epidermal Layers
- The stratum basale layer of the epidermis is firmly attached to the dermis.
- The stratum basale layer contains actively mitotic stem cells.
- The stratum granulosum layer is responsible for waterproofing and protection from abrasion.
- The stratum granulosum layer contains keratohyaline granules and lamellated granules.
- The stratum spinosum layer contains keratinocytes unified by desmosomes.
- The stratum corneum layer is only present in thick skin.
Sweat Glands
- Apocrine sweat glands are found in the axillary and anogenital areas.
- Eccrine sweat glands are found in the palms, soles of the feet, and forehead.
- Ceruminous glands are found in the external ear canal and secrete cerumen (ear wax).
- Mammary glands are specialized for milk secretion.
- Sebaceous glands secrete sebum, an oily holocrine secretion that softens hair and skin.
Hair Types
- Vellus hair is pale and fine, and found in children and adult females.
- Terminal hair is coarse, long, and found in the eyebrows, scalp, axillary, and pubic regions.
Dermis
- The reticular layer of the dermis contains collagen fibers that add strength and resiliency to the skin.
Skin Colors
- Eumelanin is responsible for dark skin colors.
Skin Cancer
- Squamous cell carcinoma arises from the stratum spinosum layer of the epidermis.
- Melanoma is characterized by a changing mole.
- The recommended treatment for melanoma is surgical excision.
Skin Assessment
- The ABCD rule is used to assess moles for melanoma.
- Full-thickness burns are characterized by a leathery, white, and firm texture.
- 15% of the body is considered critical if it has third-degree burns.
- The rule of nines does not include the genitals.
Skin Aging
- In old age, the skin becomes thinner, drier, and less adaptable.
- Decreased numbers of melanocytes and Langerhans' cells increase the risk of skin damage and cancer.
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Description
Test your knowledge on sweat glands and their different types with this quiz! Learn about eccrine sweat glands, apocrine sweat glands, and modified sweat glands like ceruminous glands. Find out where these glands are located and what they secrete. Put your knowledge to the test and see how much you know about sweat glands and their functions.
