How does the kidney control blood pressure with the renin-angiotensin -aldosteron system? What is the stimulus, what organ secretes each of the components all of their effects.
Ans: ACE that converts angiotensin I to angiotensin II is made in Kidneys. In particular, renal ACE and locally generated angiotensin II affect the activity of several key sodium transporters and the induction of sodium and water retention resulting in the elevation of BP thus controlling BP.
Stimulus: Any change in the organism that causes the organism to react is called stimulus. Ex: Anterior Pituitary secretes prolactin (stimulus) in pregnancy and nipple stimulation (i.e.the breast tissue reat).