Phys 6 Regulation of arterial pressure Flashcards
how do you calculate MAP
what is a normal value?
MAP is mostly what?
regulated by what?
Baroreceptor as a reflex
(what type of reflex (what happens))
Baroreceptor reflex anatomy
location of baroreceptors?
use what nerve?
lead to where?
what NT?
Baroreceptor anatomy
Detectors?
Sense?
Increase vs decrease firing rate?
most responsive to change in what?
Baroreceptor reflex anatomy
Brain/brain stem regions?
differnent routes from the NTS?
Control center
baroreceptors send signals where?
stretch of receptors do what?
Efferents are what type of response?
they travel where
Whats MABP?
Control center flow chart
- for the first step the + would be increase firing due to increased stretch activating the cardiac decelerator which would decrease SA node firing.
- if it was a decrease in firing then activate sympathetic side cardiac accelerator and vasoconstrictor
integrated function of the baroreceptor reflex
in the BP formula what variable is changed by what?
Balance between systems
increased frequency of stimulation does what?
recruit up to what? where?
decreased frequency?
Aortic vs carotid
Sympathetic nervous system causes?
Parasympathetic nervous system causes?
Decreased MAP
what happens?
Increased MAP
what happens?
What happens during hypertension (more chronic)
Baroreceptor reflex occurs quickly what happens with time?
Drop in BP (what happens next) RAAS
what about rise in BP?
What secretes renin?
where is it located?
secreted in response to what?
Angeiotensin II causes what?
flow chart of renin-angiotensin II-aldosterone system.
BP= COxTPR
What else will renin system cause to be secreted?
Hormone
what does this do?
what specifically causes it to be secreted?
What else is a regulatory mechanism of BP
what causes secretion?
what does it cause?
what can decrease blood volume?
what does this lead to?
vascular function curve shifts where?
Decreased blood volume
compensatory responses
