Hormones like adrenaline provide a wider range of tissue responses by reaching all cells in the body, allowing for coordinated and energy-efficient preparations for activities like fighting or fleeing, which would be limited with only electrical impulses via nerve cells.
What advantage does the use of hormones like adrenaline offer over relying solely on electrical impulses via nerve cells for bodily preparations in a stressful situation?
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Hormones like adrenaline offer advantages over relying solely on electrical impulses via nerve cells for bodily preparations in a stressful situation due to their systemic and prolonged effects. Adrenaline is released into the bloodstream, allowing for rapid and widespread dissemination to target tissues throughout the body. This ensures a coordinated and sustained response, optimizing the physiological changes needed for the fight-or-flight reaction. In contrast, electrical impulses through nerve cells are more localized and momentary. Hormonal release enables a comprehensive preparation, enhancing oxygen delivery, alertness, and energy mobilization, facilitating a holistic and enduring response to the perceived threat.