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Physiology Renal > renal 6 > Flashcards

renal 6 Flashcards

1
Q

tf body temp is highest from 3-6 pm

A

T lowest from 3-6 am

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2
Q

tf ovulation has .5 degree celcus dec in temp

A

f inc

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3
Q

homeotherms

A

maintain body temp in narrow range

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4
Q

major way to get heat from core to skin

A

convection

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5
Q

which of the following isnt a way to eliminate heat convection conduction radiation

A

radiation

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6
Q

convection

A

fluid movement

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7
Q

conduction

A

diffusion and collision of particles

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8
Q

bigger velocity

A

–> bigger gradient in temp (convection)

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9
Q

True false being in cold water increases the amount of heat that is lost from you

A

T water has higher heat capacity than air

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10
Q

wate vapour pressure on skin — with sweat and carries — because of the —-

A

inc;heat; gradient(water more pressure than air)

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11
Q

where do temp sensors exist

A

pre optic area and ant hyp, entire skin surface

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12
Q

tf temp sensory have merkel corpsucle

A

F have free nerve ending

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13
Q

example of acral skin

A

face lip finger

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14
Q

tf trunk and limbs have low conc of temp receptor

A

T

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15
Q

tf acral skin have higher onc of temp receptor

A

T(fine temp discrimination

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16
Q

tf when warm receptor stim there is depol and action potential

A

T ion channel open depol inc in AP

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17
Q

capsaicin

A

stim warm receptor

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18
Q

menthol and oil or wintergreen

A

stim cool sensation

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19
Q

tf in body core thermoreceptor there are only cold thermoceptors

A

F only warm

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20
Q

which is false about core thermceptors in brain in SC responds to 10 degree diff between mean can exist in muscles

A

responds to 10 degree diff between mean –> 2-4 degree

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21
Q

skin therm receptors tell u to turn on heat loss mech more agresive in hot env to turn on heat loss mech more agresive in cold env to turn on heat loss mech less agresive in hot env

A

to turn on heat loss mech more agresive in hot env

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22
Q

tf core body thermoceptors inc met rate same amt for diff skin thermoceptors.

A

F for higher skin thermoceptor the temp is less skin thermoceptors alter sensitivity to body core thermceptor

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23
Q

Brown adipose tissue

A

inc rate of metab

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24
Q

cutaenous ciruclation

A

inc blood to skin

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25
Q

vasocontrict to skin

A

less heat loss

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26
Q

TF ANS control cut circulation

A

T

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27
Q

shivering

A

invol clonic rhythmic contractions and relaxation

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28
Q

which of the following has noradrenagenic stim for cut circ of skin vasoconstrition vasodil of acral skin vasodil of non acral skin

A

vasoconstriction

29
Q

tf vasodil of acral skin involves bypassing cap

A

t

30
Q

tf vasodil of acral skin use symp ns

A

F doesnt

31
Q

kallikrein is released in vasoconstrition vasodil of acral skin vasodil of non acral skin

A

vasodil of non acral skin

32
Q

kallikrein; bradykin 1st second second 1st vasodil; comes from activated sweat gland involved in vasodil of acral skin

A

1st second

33
Q

tf brown adipose tissue only found in infants

A

F

34
Q

Infants

A

thin shell of fat and skin and more susceptible to heat loss

35
Q

which 2 inc UCP T3 and FA FA and T2 protein kinase and T3 5 deiodinase and alpha 1 receptor

A

T3 and FA

36
Q

in brown adipose tissue B3 stim by NE ultimately make Lipase (convert TG to FA) B3 stim by NE make 5’ deiodinase T3 converts to T2 via 5’ deiodinase

A

B3 stim by NE ultimately make Lipase (convert TG to FA)

37
Q

TF in brown adipose tissue UCP reverse gradient of H + into inner mit membrane. ATP synthase does the opposite

A

T

38
Q

Non shiver thermogenesis happens in

A

brown addpose cells

39
Q

hyperthermia

A

core temp above limits

40
Q

hyperthermia

A

hot humid env with phys activity

41
Q

tf in hyperthermia inc in core temp by less radiative heat loss less conductive heat loss more evap heat loss 1 and 2

A

1 and 2

42
Q

inc radiation and metabolism

A

cause hyperthemia

43
Q

tf in hypothermia shivering and cutaneous constriction is sufficient

A

F not sufficienct have to get out of water

44
Q

fever in hot env

A

heat loss mech off

45
Q

fever in cold env

A

heat loss mech on

46
Q

fever in—

A

fever in cold env

47
Q

inc of temp in fever

A

improve t lymph proliferation

48
Q

tf t lymphocyte proliferate greater in vitro when at 39 then 37 degrees Celsius

A

T

49
Q

heat loss neurons on

A

fever i cold

50
Q

shift balance point of temp of 37 dgress celcius

A

Fever or excersize

51
Q
A
52
Q

tf

at prox tubule k is reabs intracellularly and secondary to water and diffusion

A

F

reabs paracellularly

53
Q

at the thick ascending limb

K is transferred to caps at basolateral membrane by

cotransport wih Cl

pump

channel

1 and 3

A

1 and 3

54
Q

how does K get into tubular cell at luminal membrane

A

cotransport wih 2 cl and na

55
Q

TF collecting duct and distal convoluted tubule

can reabsorb and sec K

A

T

56
Q

hypokalemia (low plasma K) which cells in CD reab K

A

intercalated cells

57
Q

tf principla cell secrete K into urine

A

T

58
Q

Lot of K in diet

A

Principle cells work to take secrete K in CD andDCT

59
Q

At basolateral membrane of Principle cells

K/Na atpase bring K into cell from cap

K/Na atpase bring K into cap from tubular cell

K channels bring K into tubular cell to be secreted

A

K/Na atpase bring K into cell from cap

60
Q

What is on the lumanal membrane of principle cells to secrete K

A

K channel

61
Q

K channels are on intercalated cells to

transfer K from lumen to Tubular cell

reabsorb K from tub. cell to cap

take ATP to reabs K

A

reabsorb K from tub. cell to cap

62
Q

In urine

A

1-20% excreted of K

63
Q

determine amt of K goes to urine

A

principle cells of CD

64
Q

tf hyperkalemia stimulates NaK pump and inc. luminal permeability independent of Aldosterons sec.

A

T

65
Q

inc plasma K levels will:

inc Na/K pump at prox tubule

inc. luminal permeability of CD
dec. aldosterone secretion

A

inc. luminal permeability of CD
inc. ald and inc. Na k pumps on basolater side of CD cells

66
Q

aldosterone

A

insert transport proteins

and make transporter

67
Q

acidosis

inc. k excretion
dec. K excretion

A

inc. K excretion

68
Q

effect of inc. tubular flow

A

inc. k excretion

69
Q
A

Physiology Renal (7 decks)

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