Gastrointestinal hormones — Flashcards

Flashcard 1: Release of the enzymatic component of pancreatic secretion is primarily stimulated by _____

Answer: cholecystokinin (CCK)

Flashcard 2: Which nutrient (glucose, fat, protein) stimulates gastrin secretion? _____

Answer: Protein (amino acids)

Flashcard 3: Somatostatin secretion is stimulated by _____ pH in the GI mucosa (high or low)

Answer: low

Flashcard 4: Thyroid hormone increases _____ absorption from the GI tract to meet the metabolic demands of increased O2 consumption

Answer: glucose

Flashcard 5: _____, an endocrine hormone, is a member of a family of peptides that includes the GI hormones secretin and GIP

Answer: Glucagon

Flashcard 6: Somatostatin decreases gastric acid secretion by decreasing levels of _____ (second messenger)

Answer: cAMP

Flashcard 7: Gastrin secretion is stimulated by vagal stimulation via the neuropeptide _____

Answer: gastrin-releasing peptide (GRP, bombesin)

Flashcard 8: What effect does somatostatin have on gallbladder contraction? _____

Answer: Decreased contraction

Flashcard 9: satiety

Answer: ventromedial area of the hypothalamus

Flashcard 10: What is the function of the area postrema?

Answer: Chemoreceptor trigger zone (CTZ) / Vomiting center

Extra: The area postrema is a circumventricular organ located in the medulla (floor of the 4th ventricle) that lacks a blood-brain barrier, allowing it to detect emetic toxins in the blood.