Branches Of The Nervous System Flashcards
Centeral NS contains
Brain and spinal cord
Peripheral NS
Has everything else and sensory and motor skills
The peripheral NS contains what other 2 nervous systems
Somatic NS and Autonomic NS
Somatic NS
Voluntary
Input from sense organs
Output from skeletal muscles
Autonomic NS
Involuntary
Input from internal receptors
Output to smooth muscles and glands
The autonomic NS includes what 2 NS
Parasympathetic NS and Sympathetic NS
Sympathetic NS
Fight flight or freeze response
Readies action for the body
Parasympathetic NS
Relaxing response
Brings the body back to homeostasis (normal)
Actions of sympathetic NS
Dilates/widens pupils
Increases breathing rate
Blood clots more easily
accelerated heart rate
Parasympathetic NS
Constricts/narrows pupils
Decreases breathing rate
Slows heart rate
Blood returns to normal