Anatomy Neurogastroenterology

1 anatomy

1.1 enteric nervous system
1.2 auerbach s plexus
1.3 meissner s plexus

anatomy
enteric nervous system


the organization of lining of gastrointestinal system.

the enteric nervous system 1 of main divisions of nervous system , main focus of neurogastroenterology. enteric nervous system refers entire system of neurons govern gastrointestinal system. capable of operating independently of brain , spinal cord, rely on innervation autonomic nervous system via vagus nerve , prevertebral ganglia in healthy subjects. however, studies have shown system operable severed vagus nerve. neurons of enteric nervous system control motor functions of system, in addition secretion of gastrointestinal enzymes. these neurons communicate through many neurotransmitters similar cns, including acetylcholine, dopamine, , serotonin. large presence of serotonin , dopamine in gut key areas of research neurogastroenterologists.

auerbach s plexus

auerbach s plexus, known myenteric plexus, collection of unmyelinated fibers , postganglionic autonomic cell bodies lie between circular , longitudinal layers of muscularis externa in gastrointestinal tract. discovered , named german neuropathologist leopold auerbach. these neurons provide motor inputs both layers of muscularis externa, , provide both parasympathetic , sympathetic input. anatomy of plexus similar anatomy of central nervous system. plexus includes sensory receptors, such chemoreceptors , mechanoreceptors, used provide sensory input interneurons in enteric nervous system. plexus parasympathetic nucleus of origin vagus nerve, , communicate medulla oblongata through both anterior , posterior vagal nerves.

meissner s plexus

meissner s plexus collection of plexuses of parasympathetic nerves run auerbach s plexus muscularis mucosae of gastrointestinal wall. discovered , named german physiologist georg meissner. functions pathway innervation in mucosa layer of gastrointestinal wall.