Cardiac Hormones Flashcards
1
Q
Atrial natriuretic peptide
A
Released from atrial myocytes
in response to INC blood volume and atrial pressure
Causes vasodilation and DEC Na+ reabsorption at the renal collecting tubule
Dilates afferent renal
arterioles and constricts efferent arterioles, promoting diuresis and contributing to “aldosterone escape” mechanism
2
Q
B-type (brain) natriuretic peptide
A
Released from ventricular myocytes
in response to INC tension
Similar physiologic action to ANP, with longer half-life
BNP blood test used for diagnosing HF
