Sympathetic nervous system

E432891

The sympathetic nervous system is a division of the autonomic nervous system that prepares the body for “fight-or-flight” responses by increasing heart rate, blood pressure, and energy mobilization.

All labels observed (1)

Label Occurrences
Sympathetic nervous system canonical 1

How this entity was disambiguated

Statements (48)

Predicate Object
instanceOf component of peripheral nervous system
division of autonomic nervous system
associatedWith adrenergic receptors
belongsTo efferent nervous system
clinicalRelevance overactivity associated with anxiety and chronic stress
target of many antihypertensive drugs
constricts cutaneous blood vessels
splanchnic blood vessels
contains postganglionic neurons
preganglionic neurons
controls pupil dilation
sweating
vasoconstriction
counterbalances parasympathetic nervous system
dilates bronchioles
pupils
function prepare body for acute stress
includes adrenal medulla
prevertebral ganglia
sympathetic chain ganglia
increases blood pressure
cardiac output
heart rate
respiratory rate
innervates bronchial smooth muscle
heart
piloerector muscles
pupillary dilator muscle
sweat glands
vascular smooth muscle
involvedIn blood pressure regulation
stress response
thermoregulation
mobilizes fatty acids
glucose
modulates basal vascular tone
originatesFrom thoracolumbar spinal cord
originSegment T1–L2 spinal cord segments
partOf autonomic nervous system
redistributes blood flow to skeletal muscle
reduces digestive secretions
gastrointestinal motility
regulates fight-or-flight response
stimulates glycogenolysis in liver
lipolysis in adipose tissue
usesNeurotransmitter acetylcholine at preganglionic synapses
epinephrine via adrenal medulla
norepinephrine at most postganglionic synapses

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Heart regulatedBy Sympathetic nervous system