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  2. Sympathetic nervous system - Wikipedia

    en.wikipedia.org/wiki/Sympathetic_nervous_system

    The sympathetic nervous system's primary process is to stimulate the body's fight or flight response. It is, however, constantly active at a basic level to maintain homeostasis. [4] The sympathetic nervous system is described as being antagonistic to the parasympathetic nervous system.

  3. Sympathetic trunk - Wikipedia

    en.wikipedia.org/wiki/Sympathetic_trunk

    The sympathetic trunk is a fundamental part of the sympathetic nervous system, and part of the autonomic nervous system. It allows nerve fibres to travel to spinal nerves that are superior and inferior to the one in which they originated. Also, a number of nerves, such as most of the splanchnic nerves, arise directly from the trunks.

  4. Classification of peripheral nerves - Wikipedia

    en.wikipedia.org/wiki/Classification_of...

    The somatic nervous system directs all voluntary movements of the skeletal muscles, and can be sub-divided into afferent and efferent neuronal flow. The autonomic nervous system is divided primarily into the sympathetic and parasympathetic nervous systems with a third system, the enteric nervous system, receiving less recognition. [2]

  5. Sympatholytic - Wikipedia

    en.wikipedia.org/wiki/Sympatholytic

    A sympatholytic (sympathoplegic) drug is a medication that opposes the downstream effects of postganglionic nerve firing in effector organs innervated by the sympathetic nervous system (SNS). [1] They are indicated for various functions; for example, they may be used as antihypertensives.

  6. Ciliary ganglion - Wikipedia

    en.wikipedia.org/wiki/Ciliary_ganglion

    The sympathetic root originates from the internal carotid plexus with cell bodies in the superior cervical ganglion. The axons pass through the ganglion and enter the eye without synapsing into the short ciliary nerves. The sympathetic root contains the postganglionic sympathetic axons that provide sympathetic supply to the blood vessels of the ...

  7. Sympathetic ganglia - Wikipedia

    en.wikipedia.org/wiki/Sympathetic_ganglia

    The sympathetic ganglia, or paravertebral ganglia, are autonomic ganglia of the sympathetic nervous system. Ganglia are 20,000 to 30,000 afferent and efferent nerve cell bodies that run along on either side of the spinal cord. Afferent nerve cell bodies bring information from the body to the brain and spinal cord, while efferent nerve cell ...

  8. Ganglionic blocker - Wikipedia

    en.wikipedia.org/wiki/Ganglionic_blocker

    Because ganglionic blockers block both the parasympathetic nervous system and sympathetic nervous system, the effect of these drugs depends upon the dominant tone in the organ system. [2] The opposite of a ganglionic blocker is referred to as a ganglionic stimulant. Some substances can exhibit both stimulating and blocking effects on autonomic ...

  9. Satellite glial cell - Wikipedia

    en.wikipedia.org/wiki/Satellite_glial_cell

    Satellite glial cells are expressed throughout the sympathetic and parasympathetic ganglia in their respective nervous system divisions. [2]Satellite glial cells are a type of glia found in the peripheral nervous system, specifically in sensory, [2] sympathetic, and parasympathetic ganglia. [3]