Atrial Natriuretic Factor

• Atrial Natriuretic Hormone:

  • peptide hormone stored in cardiomyocytes, particularly in the right atrium and are released when high blood pressure ruptures the cardiomyocytes
  • released when blood pressure is high - hypertension, unlike all the other hormones which are released during hypotension
  • acts on arterioles to caused vasodilation -> decrease in TPR -> decrease of BP