tangent
03-13-02, 12:58
Doing something well and understanding what and why somebody does
something are different things. I hate cookbook recipes in medical
issues.
> >> Regurgitation is another story.
> >Active vomiting doesn't require sceletal muscles. You're on the wrong
> >horse, Andzrej.
>
> Herald, you might be sitting on the right horse but facing his back-side.
> In the Detailed Pathophysiology, by Prof.Dr Ludwig Heilmeyer, Universitat
> Ulm/Donau, Dr. Norberg Hanning and Gerhard Berg write:
> (You do believe them, don't you?)
> "...During the act of vomiting antrum closes, periantral part of stomach
> contracts, peristalsis stops, and gastric contents gathers in relaxed part
> of the body and the fundus. Next, the cardia opens and as a result of
> spasmodic contractures of abdominal wall muscles and the diaphragm
> the gastric contents is expelled outside through the relaxed esophagus.
> Antiperistaltic movements are at least, not necessary in this act..."
But smooth muscles are the actors at the stomach. End plates are absent
there.
> So, vomiting is FORCEFUL; it requires coordinated muscular (striated)
> contractions; it requires sphincter control, it may involve antiperistalsis
> and it requires esophageal dilatation. It is not simply regurgitation, a
> mechanical event in which gastric and esophageal content rise to the pharynx
> because of pressure differences.
O.k., you may eliminate diaphragm and abdominal wall with your
relaxation, but the smooth muscles of stomach and esophagus are
absolutely necessary for this event.
something are different things. I hate cookbook recipes in medical
issues.
> >> Regurgitation is another story.
> >Active vomiting doesn't require sceletal muscles. You're on the wrong
> >horse, Andzrej.
>
> Herald, you might be sitting on the right horse but facing his back-side.
> In the Detailed Pathophysiology, by Prof.Dr Ludwig Heilmeyer, Universitat
> Ulm/Donau, Dr. Norberg Hanning and Gerhard Berg write:
> (You do believe them, don't you?)
> "...During the act of vomiting antrum closes, periantral part of stomach
> contracts, peristalsis stops, and gastric contents gathers in relaxed part
> of the body and the fundus. Next, the cardia opens and as a result of
> spasmodic contractures of abdominal wall muscles and the diaphragm
> the gastric contents is expelled outside through the relaxed esophagus.
> Antiperistaltic movements are at least, not necessary in this act..."
But smooth muscles are the actors at the stomach. End plates are absent
there.
> So, vomiting is FORCEFUL; it requires coordinated muscular (striated)
> contractions; it requires sphincter control, it may involve antiperistalsis
> and it requires esophageal dilatation. It is not simply regurgitation, a
> mechanical event in which gastric and esophageal content rise to the pharynx
> because of pressure differences.
O.k., you may eliminate diaphragm and abdominal wall with your
relaxation, but the smooth muscles of stomach and esophagus are
absolutely necessary for this event.