thesIn the order of importance, the first two most factors that play a role in the regulation of aldosterone secretion are (1) K+ion concentration in the ECF and (2) Renin-angiotensin system.
Without specific context or additional information, it is not possible to determine the exact references for these factors. However, the regulation of aldosterone secretion by potassium ion concentration in the extracellular fluid (ECF) and the renin-angiotensin system are well-established concepts in physiology and endocrinology. These factors are widely described and studied in various scientific publications, textbooks, and review articles related to aldosterone and its regulation.
