sympathetic nervous system

pars sympathica divisionis autonomici systematis nervosi

The sympathetic nervous system is one of the two divisions of the vertebrate autonomic nervous system (the other being the parasympathetic nervous system). The sympathetic preganglionic neurons have their cell bodies in the thoracic and lumbar regions of the spinal cord and connect to the paravertebral chain of sympathetic ganglia. Innervate heart and blood vessels, sweat glands, viscera and the adrenal medulla. Most sympathetic neurons, but not all, use noradrenaline as a post-ganglionic neurotransmitter [GO].

Typ Bone
Körpersystem Nervous
Lateinischer Name pars sympathica divisionis autonomici systematis nervosi
FMA ID 9906

Häufig gestellte Fragen

Where do sympathetic preganglionic neurons originate?
Sympathetic preganglionic neurons have their cell bodies in the intermediolateral cell column of the thoracic (T1-T12) and upper lumbar (L1-L3) spinal cord segments, giving the sympathetic system its thoracolumbar designation.
What is the role of the sympathetic chain ganglia?
The paravertebral sympathetic chain ganglia are two chains of ganglia running alongside the vertebral column. Preganglionic fibers synapse here (or in prevertebral ganglia) with postganglionic neurons that then innervate target organs throughout the body.
What neurotransmitters does the sympathetic nervous system release?
Sympathetic preganglionic neurons release acetylcholine at ganglia (nicotinic receptors). Postganglionic sympathetic neurons primarily release norepinephrine (adrenergic), except for sweat glands (cholinergic) and the adrenal medulla, which releases epinephrine directly into the bloodstream.

Verwandte Strukturen

accessory nucleus of optic tract nuclei accessorii tractus optici muscle spindle muscle stretch receptor mushroom body corpora pedunculata myelencephalon sulcus limitans cavum septum pellucidum cave of septum pellucidum spinal cord commissure neodentate part of dentate nucleus neodentate portion of dentate nucleus nerve nerves

Medizinischer Haftungsausschluss

Dieser Inhalt dient ausschließlich zu Bildungs- und Informationszwecken. Er ist nicht als Ersatz für professionellen medizinischen Rat, Diagnose oder Behandlung gedacht. Wenden Sie sich bei Fragen zu einem medizinischen Zustand stets an Ihren Arzt oder einen anderen qualifizierten Gesundheitsdienstleister. Ignorieren Sie niemals professionellen medizinischen Rat oder verzögern Sie dessen Einholung aufgrund von etwas, das Sie auf dieser Website gelesen haben.

Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.