Term
| It keeps out invading organisms. It blocks UV radiation with melanin pigments. |
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Definition
| How does skin provide protection? |
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Term
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Definition
| What vitamin does the skin make when exposed to the sun? |
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Term
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Definition
| What's the outer, dead layer of the epidermis? |
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Term
| By dilating vessels in skin and sweating to release heat, and constricting vessels in skin to retain heat. |
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Definition
| How does skin regulate temperature? |
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Term
| By having a layer of dead, keratinized (waterproof) cells in the outside layer of the epidermis. |
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Definition
| How does skin keep water in the body? |
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Term
| sweat (urea, uric acid, salts, water), sebum, sex pheromones |
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Definition
| What substances are secreted onto the skin? |
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Term
| touch receptors (meissner's and pacinian corpuscles), pain, temp. |
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Definition
| What sensory receptors are located in the dermis? |
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Term
| epidermis, dermis, subcutaneous |
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Definition
| What are the 3 layers of skin from the outside to the inside? |
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Term
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Definition
| What makes hair tough and waterproof? |
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Term
| They are too far away from the blood vessels that are located in the upper dermis. |
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Definition
| Why is much of the epidermis dead or dying cells? |
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Term
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Definition
| Which layer of the epidermis produces new living cells? |
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Term
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Definition
| Darker skinned people have more _______ in their epidermis than light skinned people. |
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Term
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Definition
| These sweat glands are numerous on head, neck and back and help cool the body. |
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Term
| the amount and size of your melanin pigment granules. |
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Definition
| What genetic factors affect skin color? |
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Term
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Definition
| What layer of skin contains the most variety of tissue types? |
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Term
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Definition
| Where is the body temp. control center? |
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Term
| stratum basale of epidermis |
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Definition
| In which layer of skin would you find melanocytes? |
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Term
| Just the base or root of the follicle. |
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Definition
| What part of hair is alive? |
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Term
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Definition
| What causes hair to go white? |
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Term
| lips, soles, palms, and nipples |
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Definition
| Where do we not have hair? |
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Term
| the amount of u.v. radiation that you're exposed to. |
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Definition
| What environmental factor affects your skin color? |
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Term
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Definition
| This muscle causes hair to stand up or creates goosebumps. |
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Term
| pigments in blood (carotene, bile); body temp., illness, emotions that dilate blood vessels (anger, embarassment. . .) |
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Definition
| What physiological factors affect skin color? |
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Term
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Definition
| What glands make ear wax? |
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Term
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Definition
| What waste products in sweat are also found in urine? |
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Term
| water proof and soften skin and hair |
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Definition
| What's the purpose of sebum? |
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Term
| sebaceous glands and apocrine sweat glands |
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Definition
| What two glands are associated with hair follicles? |
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Term
| overactive sebaceous glands that are stimulated by androgens (male hormones) |
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Definition
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Term
| It stimulates dermal blood vessels to contstrict and it causes skeletal muscles to contract. |
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Definition
| What does the hypothalamus do when the body temp. drops? |
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Term
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Definition
| When your skin just turns pink and hurts from sun exposure what type of burn is it? |
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Term
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Definition
| These sweat glands dump sweat into hair follicle and are more productive during stress. |
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Term
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Definition
| Finger nails grow from the base called the _________ |
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Term
| Fat is insulative (lots of water in fat cells) and traps body heat. |
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Definition
| How does adipose tissue help to regulate temp.? |
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Term
| the proteins collagen and elastin |
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Definition
| What proteins in the dermis make it elastic? |
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Term
| loose connective tissue, major blood vessels, and adipose tissue |
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Definition
| What's in the subcutaneous layer? |
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Term
| It stimulates dermal vessels to dilate and sweat glands to secrete. |
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Definition
| What does the hypothalamus do when the body becomes hyperthermic? |
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Term
blood clots and forms a scab.
Fibroblasts form new skin tissue below the scab,
Scab is lifted by new cell growth and it eventually sloughs off. |
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Definition
| What are the steps to heal a cut? |
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Term
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Definition
| When the dermis is partially burned and blisters and peels, it's a ______ degree burn. |
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