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Sympathetic Nervous System
Steve Rodgers
Created on January 23, 2023
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Transcript
The Role of the Sympathetic Nervous system
The Sympathetic Nervous System is activated in times of stress or danger. It is part of the Automatic Nervous System and occurs without conscious control.
Neurotransmitters
Norepinephrine
Norepinephrine
Acetylcholine
Epinephrine
The neurotransmitters lead to the physical and chemical effects seen throughout the body once a stimulus is confronted. They can communicate throughout the body and lead to conditions that enable better adaptation to the situation.
THe Main effects
- Heart rate increases to transport more Oxygen through the body
- Pupils will get bigger to enhance vision
- Energy directed for digestion is sent to other body systems
- Liver energy stores are activated
- Oxygen delivery is enhanced by relaxing the muscles down the airway pathway
Location
The signals seen within the Sympathetic Nervous System arise in the spinal cord. The signals sent are then spread to the individual body parts to exert the effects of the neurotransmitters.