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  2. Postganglionic nerve fibers - Wikipedia

    en.wikipedia.org/wiki/Postganglionic_nerve_fibers

    The neurotransmitters of postganglionic fibers differ: In the parasympathetic division , neurons are cholinergic . That is to say acetylcholine is the primary neurotransmitter responsible for the communication between neurons on the parasympathetic pathway .

  3. Arrector pili muscle - Wikipedia

    en.wikipedia.org/wiki/Arrector_pili_muscle

    Each arrector pili is composed of a bundle of smooth muscle fibres which attach to several follicles (a follicular unit). [4] Each is innervated by the sympathetic division of the autonomic nervous system. [4]

  4. Sympathetic nervous system - Wikipedia

    en.wikipedia.org/wiki/Sympathetic_nervous_system

    There are two kinds of neurons involved in the transmission of any signal through the sympathetic system: pre-ganglionic and post-ganglionic. The shorter preganglionic neurons originate in the thoracolumbar division of the spinal cord specifically at T1 to L2~L3, and travel to a ganglion, often one of the paravertebral ganglia, where they synapse with a postganglionic neuron.

  5. Sympathoadrenal system - Wikipedia

    en.wikipedia.org/wiki/Sympathoadrenal_system

    Chromaffin cells contained in the adrenal medulla act as postganglionic nerve fibers that release this chemical response into the blood as a circulating messenger. The sympathoadrenal system can activate and discharge chemical messengers as a single unit to activate an organism's “fight or flight” response.

  6. Ganglion - Wikipedia

    en.wikipedia.org/wiki/Ganglion

    Cranial nerve ganglia contain the cell bodies of cranial nerve neurons. Autonomic ganglia contain the cell bodies of autonomic nerves. In the autonomic nervous system, fibers from the central nervous system to the ganglia are known as preganglionic fibers, while those from the ganglia to the effector organ are called postganglionic fibers.

  7. Muscarinic acetylcholine receptor - Wikipedia

    en.wikipedia.org/wiki/Muscarinic_acetylcholine...

    As a consequence of this, nicotinic receptors are often cited as the receptor on the postganglionic neurons at the ganglion. However, the subsequent hyperpolarization ( IPSP ) and slow depolarization (Slow EPSP) that represent the recovery of the postganglionic neuron from stimulation are actually mediated by muscarinic receptors, types M 2 and ...

  8. Today's Wordle Hint, Answer for #1298 on Tuesday ... - AOL

    www.aol.com/todays-wordle-hint-answer-1298...

    If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1298 ahead. Let's start with a few hints.

  9. Dorsal root ganglion - Wikipedia

    en.wikipedia.org/wiki/Dorsal_root_ganglion

    The nerve endings of dorsal root ganglion neurons have a variety of sensory receptors that are activated by mechanical, thermal, chemical, and noxious stimuli. [5] In these sensory neurons, a group of ion channels thought to be responsible for somatosensory transduction have been identified.