This is due to the physiology of the CNS vomiting centre and its inputs from the chemoreceptor trigger zone versus the inner ear.
2.
By the way the " vomiting centre " is the area postrema . talk ) 22 : 40, 27 May 2016 ( UTC)
3.
So, are there M3 receptors in the vomiting centre, and only M1 receptors in the vestibular nuclei and the nucleus of the solitary tract ? talk ) 21 : 51, 27 May 2016 ( UTC)
4.
There are mACh receptors in the vomiting centre, so why don't antimuscarinics like hyoscine block all vomiting reflexes ( instead of just motion sickness and gastric irritation, in the vestibular nuclei and nucleus of the solitary tract ).
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