|Mar2-11, 10:49 AM||#1|
Stimulus for renin angiotensin system?
I have to write a simple essay about this,I know what to write but I'm stuck with the stimulus so can't start the essay. My text book is so vague. I want to know the stimulus in a haemorrhage.
1. Is it the decrease in renal perfusion pressure detected by afferent arteriole that secretes renin.
2. Or decrease in sodium chloride deteced by the macula densa that stimulates it.
|Mar2-11, 07:24 PM||#2|
You should note though, that the RAAS system is complex and requires lots of feed back modifiers. Atrial stretch receptors (barroreceptors) can also alter circulating renin levels.
|Mar3-11, 08:27 PM||#3|
have a look at beta 1 receptors in the autonomics section of any pharm text - and tie that in with the baroreceptor response bobz mentioned
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