Physiology 3120 Lecture Notes - Lecture 22: Carotid Sinus, Vasomotor Center, Preganglionic Nerve Fibers

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Starak Leture 22
-aroreeptors lie i the alls of these to essels
RMR RA is here the lood returs uder er lo pressure
-ost lood is loated i eous sstei irulatio hih eters ito RA thus olue
reeptors are loated there
-regulated lood olue hih is related to lood pressure as ell sie lo olue auses lo
pressure
-ADH auses ater retetio thus ill irease lood olue he it is lo
-also releases rei hih auses AgII produtio that auses asoostritio hih leads to
ireased lood pressure
RMR fro efore that Ag II also stiulated thirst ad aldosteroe to retai salt ad ater i
od
-opposite ours he ireased lood olue
-so less ADH released less ater retetio to derease lood olue he it is high
-less rei released less AgII thus less asoostritio hih leads to dereased lood
pressure
-ANF released fro atrial usle ells due to strethed atriu uder high lood olue to
ause asodilatio to derease lood pressure
INPUT
Afferets fro ehaoreeptors
-aroreeptors ehaoreeptors loated i aorti arh ad arotid sius
-afferets go fro aroreeptors to edulla here the ardioasular eter is loated
-use oth eliated solid ad o-eliated dashed fiers
aorti arh aroreeptor afferet fiers i depressor ere that jois agus ere later
arotid sius aroreeptor fiers i arotid sius eres
OUTPUTS
PNS efferets
-edulla seds sigals fro CV otrol eter through agus ere RMR agal toe ie:
pregaglioi fier
-gaglio red irle is lose to heart here release Ah to sapse o to postgaglioi fier
that also releases Ah o to SA ad AV odes slo do HR ad slo do AP propagatio
to AV ode
SNS efferets
-eres trael do spial ord first ad eit spial ord at arious spots ia pregaglioi fiers
that sapse o to spatheti gaglio
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