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OPTOM 8010 - APD > Integumentary System & Glands of the Skin > Flashcards

Integumentary System & Glands of the Skin Flashcards

studying for midterm 1

1
Q

layers of the epidermis (superficial to deep)

A

stratum corneum
stratum granulosum
stratum spinosum
stratum basale

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2
Q

stratum corneum

A

forms major water barrier, determines thickness, contains keratin

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3
Q

stratum granulosum

A

contains keratinocytes

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4
Q

stratum basale

A

stem cells for skin, contains melanocytes

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5
Q

dermis

A

papillary dermis and reticular dermis

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6
Q

papillary dermis

A

loose irregular connective tissue, type I & III collagen

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7
Q

reticular dermis

A

dense irregular connective tissue, type I collagen

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8
Q

hypodermis (aka subcutaneous tissue)

A

loose irregular connective tissue, include adipose and smooth muscle cells from arrector pili muscles

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9
Q

adipose tissue types

A

white and brown adipose tissue

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10
Q

white adipose tissue

A

hormone secretion, useful for energy stores, in adults

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11
Q

brown adipose tissue

A

protects against heat lost, thermogenesis, surrounds some internal organs and in babies

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12
Q

keratinocytes

A

produces keratins for cell envelope, and lamellar bodies for lipid envelope

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13
Q

melanocytes

A

becomes melanin, which blocks UV in the skin

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14
Q

what is ocular albinism?

A

decreased # of melanosomes (only affects eye)

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15
Q

what is oculocutaneous albinism?

A

decreased number of melanosomes
-either tyrosinase (-) no melanin or (+) some melanin

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16
Q

nerve endings and functions

A

krause end bulbs: cold
meissner: light touch
merkel’s: light pressure
pacinian corpuscles: pressure and vibration
ruffini: skin stretch
free nerve ending: pain

17
Q

hair follicle attachments

A

infundibulum: surface to sebaceous gland
isthmus: sebaceous gland to arrector pili
inferior segment: arrector pili to matrix

18
Q

layers of the hair deep to superficial

A

medulla, cortex, cuticle, internal root sheath, external root sheath, glassy membrane

OPTOM 8010 - APD (12 decks)

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