Week 4 - GI Physiology and Pathophysiology Exam Questions and
Answers With complete solution–Expert Verified | Latest Questions
2025
liver: produces bile for fat emulsification
pancreas: secretes digestive enzymes and bicarbonate
gallbladder: stores and releases bile
salivary glands: initiate carbohydrate digestion
digestion: Mechanical and chemical breakdown of food into absorbable molecules
absorption: Uptake of nutrients (carbohydrates, proteins, fats, vitamins, and minerals) into the
bloodstream or
lymph
motility: Coordinated muscular contractions (e.g., peristalsis and segmentation) that propel and mix
contents along the tract
secretion: Release of enzymes, acids, bile, and mucus to aid digestion and protect the mucosa
excretion: Elimination of undigested material and waste products via defecation
innermost layer of the GI tract mucosa: epithelium
epithelium is composed of which cells for absorption and secretion: enterocytes
goblet cells
middle connective tissue layer of GI tract mucosa: lamina propria
lamina propria houses: blood vessels lymphatic's and immune cells
outer thin layer of smooth muscle of GI tract mucosa: muscularis mucosae
muscularis mucosae facilitates local movements of the mucosa to enhance-
: absorption and secretion
submucosa is a dense connective tissue that supports the: mucosa
submucosa contains: blood vessels, lymphatics, and the submucosal plexus for local neural control
1/7
, muscularis externa is composed of two main layers of smooth muscle:: inner
circular layer
outer longitudinal layer
inner circular layer contracts to: constrict the lumen
outer longitudinal layer contracts to: shorten the GI tract
the muscularis externa houses the: myenteric plexus which coordinates motility
serosa/adventitia is what layer of the GI tract: outermost layer
serosa is a thin connective tissue layer covered by: mesothelium present in intraperitoneal
organs
adventitia is a fibrous connective tissue layer found in retroperitoneal or-gans:
anchoring them to surrounding structures
2/7
Answers With complete solution–Expert Verified | Latest Questions
2025
liver: produces bile for fat emulsification
pancreas: secretes digestive enzymes and bicarbonate
gallbladder: stores and releases bile
salivary glands: initiate carbohydrate digestion
digestion: Mechanical and chemical breakdown of food into absorbable molecules
absorption: Uptake of nutrients (carbohydrates, proteins, fats, vitamins, and minerals) into the
bloodstream or
lymph
motility: Coordinated muscular contractions (e.g., peristalsis and segmentation) that propel and mix
contents along the tract
secretion: Release of enzymes, acids, bile, and mucus to aid digestion and protect the mucosa
excretion: Elimination of undigested material and waste products via defecation
innermost layer of the GI tract mucosa: epithelium
epithelium is composed of which cells for absorption and secretion: enterocytes
goblet cells
middle connective tissue layer of GI tract mucosa: lamina propria
lamina propria houses: blood vessels lymphatic's and immune cells
outer thin layer of smooth muscle of GI tract mucosa: muscularis mucosae
muscularis mucosae facilitates local movements of the mucosa to enhance-
: absorption and secretion
submucosa is a dense connective tissue that supports the: mucosa
submucosa contains: blood vessels, lymphatics, and the submucosal plexus for local neural control
1/7
, muscularis externa is composed of two main layers of smooth muscle:: inner
circular layer
outer longitudinal layer
inner circular layer contracts to: constrict the lumen
outer longitudinal layer contracts to: shorten the GI tract
the muscularis externa houses the: myenteric plexus which coordinates motility
serosa/adventitia is what layer of the GI tract: outermost layer
serosa is a thin connective tissue layer covered by: mesothelium present in intraperitoneal
organs
adventitia is a fibrous connective tissue layer found in retroperitoneal or-gans:
anchoring them to surrounding structures
2/7
