Because its cells begin in the thoracolumbar division – the thoracic and lumbar regions of the spinal cord – the sympathetic nervous system is said to have a thoracolumbar outflow. Axons of these nerves leave the spinal cord through the anterior root.

Key regulatory sites within the central nervous system that govern sympathetic outflow have been identified and the control of the sympathetic nervous system has been and continues to be an area of intense investigation.

2023年11月2日 · Some of these physical effects include faster breathing, increased heart rate and blood pressure, dilation of pupils, redirection of blood flow to important organs (e.g. brain and muscles), and increased sweating. This article will discuss the anatomy and function of the sympathetic nervous system.

Your sympathetic nervous system is the part of your nervous system that carries signals related to your “fight-or-flight” response. That makes it a key part of your response to stressful situations.

sympathetic nervous system, division of the nervous system that functions to produce localized adjustments (such as sweating as a response to an increase in temperature) and reflex adjustments of the cardiovascular system.

2024年10月15日 · The sympathetic chain (sympathetic trunk or paravertebral ganglia) are 22 pairs of interconnected neuronal cell bodies which run parallel either side of the vertebral column – extending from the base of the skull to the coccyx.

2022年8月17日 · Sympathetic pre-ganglionic fibres arise from neurones in the lateral horn of the spinal cord between T1-L2/3 (the thoracolumbar ANS outflow). Pre-ganglionic sympathetic fibres are short and exit the spinal cord via the ventral root before joining the spinal nerve.

2024年4月30日 · The sympathetic nervous system (SNS), mediated by the sympathetic chain (trunk) and ganglia, is a major division of the autonomic nervous system. It is composed of general visceral afferent and efferent axons that allow for involuntary control of bodily functions via the hypothalamus.

2025年1月7日 · (For this reason the sympathetic system is sometimes referred to as the thoracolumbar outflow.) The axons of these neurons exit the spinal cord in the ventral roots and then synapse on either sympathetic ganglion cells or specialized cells in the adrenal gland called chromaffin cells.

Sympathetic activity and vascular function, both of which are key factors in the development and prognosis of cardiovascular events and disease, are linked at several levels.