Flashcards in Blood Pressure Deck (20):
Which cells release renin?
Granular cells in the juxtaglomerular apparatus
which cells monitor Na levels in tubular fluid?
which 3 things stimulate renin release ?
renal artery hypotension (systemic hypotension)
stimulation of renal sympathetic nerves
Decreased Na in renal tubular fluid sensed by macula dense cells
Two types of Natriuretic peptides?
ANP and BNP
Where are the 2 peptides produced?
ANP in the atria, BNP in the ventricles
What system do the natriuretic peptides counteract?
When are NPs released and what do they do?
released in response to cardiac distension and cause excretion of salt and water in the kidneys. Also act as vasodilators, reducing blood pressure.
Serum ___ can be measured in patients with suspected heart failure?
ADH is also known as?
ADH produced in ?
here is ADH stored?
posterior putuitary (pp)
secretion of ADH is stimulated by?
Reduced extracellular fluid volume (INCREASED PLASMA OSMOLALITY)
extracellular fluid volume is sum of 2 components - what are they?
Intracellular fluid and plasma. Cells bathe in solution
Where is ACE enzyme found mainly?
pulmonary vasccular endothelium
what does renin do?
stimulates formation of angiotensin I from angiotensinogen
where is angiotensinogen produced
where is aldosterone released?
where does it act?
what is the effect of aldosterone?
it causes water and sodium retention