PHYL 142 | Digestive | Deglutition (Swallowing) & the Esophagus
Anatomy & Physiology with Dr. J・2 minutes read
Swallowing involves multiple phases, from the buccal phase to peristalsis in the esophagus, ensuring food moves smoothly through the alimentary canal under autonomic nervous system control. Peristalsis in the esophagus is an essential, involuntary process that propels the bolus towards the stomach, resembling squeezing toothpaste from a tube.
Insights
- The process of swallowing involves intricate phases such as buccal, pharyngeal, and esophageal, with peristalsis playing a vital role in moving the bolus through the GI tract.
- Peristalsis in the esophagus is likened to squeezing toothpaste from a tube, ensuring a unidirectional flow of food and involving various layers like mucosa, submucosa, muscularis externa, and adventitia within the esophagus.
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Recent questions
What is the medical term for swallowing?
Deglutition
What is peristalsis and its role in digestion?
Involuntary muscle contractions moving food along the digestive tract
What is the alimentary canal?
A continuous tube guiding food from mouth to intestines
What is the buccal phase of swallowing?
Tongue pushing food against the hard palate
What are the layers of the esophagus?
Mucosa, submucosa, muscularis externa, and adventitia
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