1. Catecholamine release is stimulated by the activation of the sympathetic nervous system . 2. It is caused by sustaining an injury to the sympathetic nervous system . 3. The phenomenon is probably a fright-flight response activated by the sympathetic nervous system . 4. Ganglionic blockers are also used to control sympathetic nervous system outflow. 5. In humans, stress hormones activate both the sympathetic nervous system and executive function. 6. There are a number of ways to curb an overactive sympathetic nervous system . 7. Ahlquist's other scientific work also includes the pharmacology of the sympathetic nervous system . 8. Moreover, the brain can control the heart rate through the sympathetic nervous system . 9. Conditions that increase automaticity include sympathetic nervous system stimulation and hypoxia. 10. The dilator pupillae is stimulated through noradrenergic receptors by the sympathetic nervous system .