What is the power of collective empathy and action?

The physiology behind a "normal" pupillary constriction is a balance between the sympathetic and parasympathetic nervous systems. Mar 1, 2023 ... Summary. The sympathetic nervous system helps to protect you from danger. When you perceive danger, your brain and spinal cord release chemicals ... If the sympathetic nerves are causing your problem, the temperature in your hands or feet will rise quickly. You may also see some flushing of the skin in the ... It is a component of virtually all spinal nerves and peri-arterial plexuses, and sympathetic fibers innervate all the blood vessels, sweat glands, arrector pili ... The sympathetic nerves are of special interest in the study of people who have pain. These nerves are responsible for the kind of pain that is described as ... Feb 9, 2022 ... The sympathetic nervous system is a normally harmonized network of brain structures, nerves and hormones that, if thrown off balance, can result in serious ... The sympathetic component tends to inhibit erections, whereas the parasympathetic system is one of several excitatory pathways. During arousal, excitatory ... Mar 22, 2019 ... When the SNS is in high gear it diverts the blood away from our digestive system to our limbs to help us fight for our life. On the flip side is ... The sweat glands are stimulated by nerve fibers that arise from the spinal cord and run along each side of the spine in what is called the sympathetic chain. Reflex Sympathetic Dystrophy Syndrome Association (RSDSA) mission is to provide support, education, and hope to all affected by the pain and disability of ...