04 Skin Questions

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Salem State University *

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200

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Biology

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Jan 9, 2024

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Skin Questions A needle would pierce the skin of the forearm in which order? 1) stratum basale 2) stratum granulosum 3) stratum spinosum 4) stratum corneum 5) stratum lucidum 1, 3, 2, 5, 4 4, 5, 2, 3, 1 1, 3, 2, 4 5, 4, 2, 3, 1 4, 2, 3, 1 As cells progress from the deeper portion of the epidermis towards the surface: they divide continually by mitosis. their supply of nutrients improve. they tend to die. they divide continually by meiosis. they become dermal cells. Exposure to ultraviolet (UV) light causes the skin to darken by stimulating the production of: carotene. keratin. haemocyanin. melanin. sebum. Glands usually associated the skin of the genitals and the axillary region are known as:
apocrine glands. arrector pili glands. sebaceous glands. sudoriferous glands. sweat glands. Mitosis occurs in which layer of the epidermis? Stratum corneum Stratum basale Stratum granulosum Stratum lucidum Reticular layer Hair, nails, and the outer layer of the skin are made mostly of a tough waterproof protein called: Elastin Collegen Cerumen Keratin In the skin, arrector pili muscles are found mainly in the: stratum basale. stratum corneum. stratum granulosum. dermis layer. stratum spinosum.
Sebaceous glands secrete: oil. sudoriferous. wax. melanin. cerumen. The different layers of the epidermis have one feature in common. This feature is the: presence of epidermal ridges. presence of melanin. presence of carotene pigments. presence of melanomas giving freckles. absence of blood vessels. The papillary layer attachs to the: nail bed. stratum corneum. hypodermis. hair cells. stratum basal and reticular layer. The structure that contracts to cause "goose bumps" is the: dermal papilla. hair bulb. skeletal muscle. hair follicle. arrector pili muscle.
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The type of tissue making up the bulk of the dermis is: adipose connective tissue. dense (irregular) connective tissue. stratified squamous epithelium. visceral muscle. transitional epithelium. When you scratch your skin, what comes off as white flakes are mostly cells from the stratum: basale. corneum. granulosum. lucidum. spinosum. Which of the following vitamins is synthesized in the skin? Vitamin A Vitamin D Vitamin E Vitamin B12 (cyanocobalamin) Vitamin K You can cut your hair without feeling pain because:
the shaft of the hair consists of dead cells. there are no nerves found within one centimeter of each hair. hair follicles develop from epidermal cells and the epidermis has no nerve endings. hair follicles have no source of nourishment and thus cannot react to being cut. a chemical in the hair papilla anaesthetizes the hair.

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