Question

1. Renal physiology (select the CORRECT statement)

   		Aldosterone increases both sodium excretion and potassium reabsorption.
   		Angiotensin II acts on the adrenal medulla to cause the release of aldosterone.
   		The enzyme ACE (angiotensin converting enzyme) enzymatically cleaves angiotensinogen to generate angiotensin I.
   		Hyperkalemia has a hyperpolarizing effect on excitable cardiac cells and can lead to life-threatening arrhythmias.
   		Angiotensin II acts on the medulla oblongata to increase the sympathetic regulation of cardiac output.

Answer 1

1. Aldosterone increases both sodium reabsorption and potassium excretion .(wrong statement given in qstn)
2. Angiotensin2 acts on adrenal cortex to cause the release of aldosterone. (Wrong statement given in qstn)
3. The enzyme Renin enzymatically cleave Angiotensinogen to generate Angiotensin 1.(Wrong statement given in qstn)
4. Hyperkalemia has a nonspecific repolarization effect on excitable cardiac cells and leads to life-threatening arrhythmias. (Wrong statement given in qstn)
5. Angiotensin 2 act on the medulla oblongata to increase the sympathetic regulation of cardiac output. (Correct statement given above)