Nutrient esophagus delivers food to the stomach

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Functions to Optimize Digestion & Nutrient Absorption? Nutrient • Digestion begins in the mouth • Mastication • Saliva • Taste sensation • Salty, sour, sweet, bitter, umami • Olfactory and gustatory cells • Swallowing • Phases • Bolus Voluntary & Involuntary Phases of Swallowing of How Does the GI Tract Coordinate Functions to Optimize Digestion & Nutrient Absorption? Nutrient • Esophagus • • • • Delivers food to the stomach Dysphagia Gastroesophageal sphincter Transit time • Less than 10 seconds How Does the GI Tract Coordinate Functions to Optimize Digestion & Nutrient Absorption? Nutrient • Stomach • Regions • Fundus, body, and antrum • Pyloric sphincter • Storage • Rugae • Mixing food with gastric secretions • Third layer of smooth muscle • Chyme Anatomy of the Stomach and Its Role in Digestion Role How Does the GI Tract Coordinate Functions to Optimize Digestion & Nutrient Absorption? Nutrient • Stomach • Gastric secretions • Gastric pits – Endocrine and exocrine cells • Gastrin • Parietal cells • Chief cells • Gastric mucosal barrier How Does the GI Tract Coordinate Functions to Optimize Digestion & Nutrient Absorption? Nutrient • Stomach • Peptic ulcers • Types • Helicobacter pylori (H. pylori) • Symptoms • Gastroesophageal reflux disease (GERD) • Gastroesophageal sphincter • Symptoms • Diagnosis Peptic Ulcers Peptic Gastroesophageal Reflux Disease (GERD) Disease How Does the GI Tract Coordinate Functions to Optimize Digestion & Nutrient Absorption? Nutrient • Regulation of gastric emptying • Influential factors • Volume • Consistency • Composition of chyme • Inf...
View Full Document

Ask a homework question - tutors are online