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CPP > L17- central control of BaroR > Flashcards

L17- central control of BaroR Flashcards

1
Q

inputs from what types of receptors into the medulla for ANS control of CVS

A

aortic and cartoid BRs
cardipulm Rs
chemoRs

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2
Q

outputs for ANS control of CVS

A

PNS - vagal nerve
SNS- post gang from spinal cord to the heart
adrenal gland

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3
Q

how toc alculate ABP

A

COXTPR

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4
Q

eqn for CO

A

SV X HR

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5
Q

2 types of arterial BRs

A

carotid sinus and aortic arch

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6
Q

BR s are stimulated by whar

A

increases in stretching of the vessel wall

- due to increase in BP

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7
Q

what happends to the AP from the BRs as BP icnrease

A

increases

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8
Q

what happends to the AP from the BRs as BP decrease

A

decrease

-called receptor unloading

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9
Q

what affects BR sensitivity

A

aging becuase the arteries can get stiffer

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10
Q

where is the sensort info from the BRs sent to

A

NTS in the medulla

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11
Q

outputs from the medulla to decrease BP

A

decrease SNSN so decreasing contractiltiy, veous return and tpr

increasing PNS

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12
Q

what happens to the blood when lying

A

blood distrubuted evenly

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13
Q

what happens when standing upright

A

gravity increases so

decreasing VR, CO and ABP

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14
Q

resposne to standing upright

A

BR reflex (BRR) as the bp drops

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15
Q

ANS effects due to BRR

A

increases SNS so HR and contractilty increase > Co increase

increase contriction so tpr increase

so BP increase

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16
Q

endocrine ffects of BRR

A

SNS so ADR releases and acting on B1 receptors

ABP increase

17
Q

renal effects of BRR

A

renin release so contriction happen

-TPR increase and water reabsorption with sodium

18
Q

what will happen to the BRR when the BP is maintained for few mins

A

reset and change its set point to a higher pressure to retain resposeiveness of BRR

19
Q

what are cardiopulm R

A

stretch receptors in the blood vessels

20
Q

response of cardopulm R a

A

detects low vol in the vessels

  • contriction and water reabsorption
  • icnrease TPR and blood vol

CPP (15 decks)

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