Some ages of license are actually higher than the age of majority. For example, the age of license to purchase alcoholic beverages is 21 in all U.S. states. Another example is the voting age, which prior to the 1970s was 21, while the age of majority was 18 in most states.
The nervous system is composed of the brain and spinal cord, together known as the central nervous system, and a vast array of peripheral nerves that transmit information to and from these central structures. The nervous system may be damaged by infection, injury, vascular problems, inflammation, and degeneration.
Your vagus nerve initiates your bodyâs relaxation response. When under stress, your sympathetic nervous system (the âflight or fightâ system) dumps stress hormones into your body. Your vagus nerve and parasympathetic nervous system releases acetylcholine to calm down this stress response, allowing you to relax.