Endocrinology | Adrenal Gland: Aldosterone скачать в хорошем качестве

Endocrinology | Adrenal Gland: Aldosterone

Official Ninja Nerd Website: https://ninjanerd.org Ninja Nerds! In this endocrine physiology lecture, Professor Zach Murphy presents a detailed exploration of Aldosterone, a key mineralocorticoid hormone produced by the zona glomerulosa of the adrenal cortex. This session highlights how aldosterone maintains electrolyte balance, blood pressure, and extracellular fluid volume, making it essential for cardiovascular and renal homeostasis. We begin by reviewing the stimuli for aldosterone secretion, including hyperkalemia, angiotensin II from the renin-angiotensin-aldosterone system (RAAS), and ACTH to a lesser extent. From there, the lecture focuses on aldosterone’s primary actions on the distal nephron's principal cells, promoting sodium reabsorption, potassium excretion, and hydrogen ion secretion—ultimately increasing water retention and raising blood pressure. Mechanistically, we explore how aldosterone acts via intracellular mineralocorticoid receptors, leading to transcription of sodium channels (ENaC) and Na⁺/K⁺ ATPase pumps. Clinical correlations include conditions like hyperaldosteronism (Conn syndrome), hypoaldosteronism, and the use of aldosterone antagonists like spironolactone in heart failure and hypertension. Enjoy the lecture and support us below! 🌐 Official Links Website: https://www.ninjanerd.org Podcast: https://podcast.ninjanerd.org Store: https://merch.ninjanerd.org 📱 Social Media   / ninjanerdlectures     / ninjanerdlectures     / ninjanerdlectures   https://x.com/ninjanerdsci/   / ninja-nerd   💬 Join Our Community Discord:   / discord   #ninjanerd #Aldosterone #AdrenalGland