Chapter 49 - Circulatory Systems - 49.5 - The Circulation Is Controlled by Hormonal and Neural Signals - 49.5 Recap - Learning Outcomes - Page 1065: 2

Adrenaline is released during significant sympathetic activation that is triggered by a drop in arterial pressure or in response to a threat. The hormone angiotensin is secreted when renal blood pressure drops. By limiting blood flow in target arterioles, these hormones can boost central blood pressure and direct flow to essential organs.

Adrenaline is released during significant sympathetic activation that is triggered by a drop in arterial pressure or in response to a threat. The hormone angiotensin is secreted when renal blood pressure drops. By limiting blood flow in target arterioles, these hormones can boost central blood pressure and direct flow to essential organs.