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PSIO305 > Lecture 6 Block 2 > Flashcards

Lecture 6 Block 2 Flashcards

1
Q

what are alpha delta fibers for

A

cold receptors

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2
Q

what are C fibers for

A

warm recepotrs

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3
Q

what are the 3 layers of the skin

A

epidermis, dermis, hypodermis

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4
Q

what epithelium are in the epidermis

A

keratinized and non-keratinized stratified squamous epithelium

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5
Q

what is the function of stratified squamous epithelial tissue

A

retain water, barrier

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6
Q

what epithelium is the dermis made of

A

areolar and dense irregular connective tissue

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7
Q

what is the function of areolar tissue

A

water reservoir, presence of blood vessels

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8
Q

what is the function of dense irregular connective tissue

A

presence of blood vessels

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9
Q

name other “things” in the dermis

A

adipose tissue, hair follicle, arrector pili muscle, sweat glands, sebaceous glands, blood vessels, thermoreceptors

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10
Q

what is the function of hair follicles

A

insulation

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11
Q

what is the function of the arrector pili muscle

A

alter boundary layer thickness

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12
Q

what are the two types of sweat glands

A

eccrine gland and apocrine galnd

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13
Q

describe the eccrine gland

A

sweat exits at pore

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14
Q

describe the apocrine gland

A

effective sweat gland, not for cooling

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15
Q

describe the sebaceous gland

A

sebum exits near hair

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16
Q

what type of epithelium exists in the hypodermis

A

adipose connective tissue

17
Q

what is the function of adipose connective tissue

A

insulation, generation of heat

18
Q

what are the two types of temperature gated ion channels

A

TRPV1 and TREK-2

19
Q

what are TRPV1 receptors

A

transient receptor potential changes, sense temperature variation, cause neuronal excitation through Na+ and Ca2+ influc

20
Q

what are TREK-2 receptors

A

“leak” channels, mediate temperature controlled efflux of K+ contribute to electric potential on the PM at rest counterbalance excitatory action of the TRPs during temperature driven excitation

21
Q

when does vasodilation occur

A

when an organism needs to lose heat

22
Q

what does TRPV1 respond to

A

less than 43 degrees celsius

23
Q

what does TRPV2 respond to

A

less than 52 degrees celsius

PSIO305 (33 decks)

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