Page 252 - Color_Atlas_of_Physiology_5th_Ed._-_A._Despopoulos_2003
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A. Deglutition
1 2 3 4 5
(After Rushmer & Hendron)
B. Esophageal motility
Pharynx Swallowing
Upper
sphincter 40
1 Deglutition
Striated muscles
0
Migration of
Smooth muscles Esophageal 40 peristaltic wave
lumen
2 mmHg Plate 10.7
Vagus nerve Stimulation 0
by cholinergic
fibers: Sphincter opening
shortening
Lower 3 40
Inhibition sphincter
by VIP and (After S. Cohen)
NO fibers: Stomach
opening
0
Respiration
Neuronal control of sphincter
muscles 0 10 20 30 s
C. Vomiting
Smell Stretching
Medications,
toxins, Cerebral Stomach
pain, pressure Rotational
Pregnancy irradiation Touch Inflammation movement
Causes
Vomiting center
with chemoreceptor
trigger zone
Fixed respiration
Heralded by:
Nausea Salivation Retching Abdominal
Dilated pupils Outbreak of sweat Paleness pressure
Duodenal
Vomiting contraction 239
Despopoulos, Color Atlas of Physiology © 2003 Thieme
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