PGY 502 Prep Exam Questions With 100%
Verified Answers!!
Water absorption in the GI tract
Driven by osmolarity and solute absorption.
Sodium absorption in the intestine
Coupled with glucose or amino acid transport via the sodium gradient.
Fat-soluble vitamins absorption
Solubilized in micelles and absorbed along with dietary fats.
Vitamin B12 absorption mechanism
Endocytosis in the ileum after binding with intrinsic factor.
Functions of the GI system
Digestion, Secretion, Absorption, Motility.
Layers of the GI wall
Serosa, Muscularis externa, Submucosa, Mucosa.
Enteric nervous system role
Regulates GI motility and secretion independently of the central nervous system.
Enzyme for carbohydrate digestion in saliva
Salivary amylase.
Muscle type in upper esophagus
Striated muscle.
Prevention of food reflux into the esophagus
Lower esophageal sphincter (LES).
, Cells that secrete hydrochloric acid
Parietal cells.
Role of intrinsic factor
Facilitates vitamin B12 absorption in the ileum.
Phases of gastric regulation
Cephalic, Gastric, Intestinal.
Main digestive function of the stomach
Partial protein digestion and food storage.
Reflex regulating gastric emptying
Feedback from the duodenum slows gastric emptying for fats and indigestible solids.
Segments of the small intestine
Duodenum, Jejunum, Ileum.
Location of most nutrient absorption
Jejunum.
Segmentation in the small intestine
Mixing contractions of circular smooth muscle without net forward propulsion.
Migrating myoelectric complex (MMC)
Periodic motility pattern that clears residual food and prevents bacterial overgrowth between
meals.
Nutrients absorbed in the ileum
Vitamin B12 and bile salts.
Primary function of the large intestine
Water and electrolyte absorption and fecal material storage.
Verified Answers!!
Water absorption in the GI tract
Driven by osmolarity and solute absorption.
Sodium absorption in the intestine
Coupled with glucose or amino acid transport via the sodium gradient.
Fat-soluble vitamins absorption
Solubilized in micelles and absorbed along with dietary fats.
Vitamin B12 absorption mechanism
Endocytosis in the ileum after binding with intrinsic factor.
Functions of the GI system
Digestion, Secretion, Absorption, Motility.
Layers of the GI wall
Serosa, Muscularis externa, Submucosa, Mucosa.
Enteric nervous system role
Regulates GI motility and secretion independently of the central nervous system.
Enzyme for carbohydrate digestion in saliva
Salivary amylase.
Muscle type in upper esophagus
Striated muscle.
Prevention of food reflux into the esophagus
Lower esophageal sphincter (LES).
, Cells that secrete hydrochloric acid
Parietal cells.
Role of intrinsic factor
Facilitates vitamin B12 absorption in the ileum.
Phases of gastric regulation
Cephalic, Gastric, Intestinal.
Main digestive function of the stomach
Partial protein digestion and food storage.
Reflex regulating gastric emptying
Feedback from the duodenum slows gastric emptying for fats and indigestible solids.
Segments of the small intestine
Duodenum, Jejunum, Ileum.
Location of most nutrient absorption
Jejunum.
Segmentation in the small intestine
Mixing contractions of circular smooth muscle without net forward propulsion.
Migrating myoelectric complex (MMC)
Periodic motility pattern that clears residual food and prevents bacterial overgrowth between
meals.
Nutrients absorbed in the ileum
Vitamin B12 and bile salts.
Primary function of the large intestine
Water and electrolyte absorption and fecal material storage.
