SNS and PSNS

SNS - Main Function

Fight or Flight response, exercise, emotion, emergency

PSNS - Main function

Rest, digest, recovery, diuresis, defication

SNS - Location of nerve roots

Thoracolumbar portion of spinal cord

PSNS - Location of nerve roots

Craniosacral nerves

SNS - Neurotransmitters

Norepinephrine, Epinephrine, Acetylcholine

PSNS - Neurotransmitters

Acetylcholine

SNS - Effect on Heart

Increases rate and force of contraction

PSNS - Effect on heart

Decreases rate of contraction

SNS - Effect on bronchioles

Bronchodilation

PSNS - Effect on bronchioles

Bronchoconstriction

SNS - Effect on blood vessels to abdominal organs and skin

Vasoconstriction

PSNS - Effect on blood vessels to abdominal organs and skin

Vasodilation

SNS - Effect on blood vessels to skeletal muscle

Vasodilation

PSNS - Effect on blood vessels to skeletal muscle

Vasoconstriction

SNS - Effect on digestive and urinary function

Inhibits

PSNS - Effect on digestive and urinary function

Stimulates

SNS - Effect on metabolic rate

Increases

PSNS- Effect on metabolic rate

Decreases

SNS- Effect on pupils

Dilation

PSNS- Effect on pupils

Constriction