GI quiz

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What is the primary function of the lower oesophageal sphincter (LOS)?

To separate the stomach from the duodenum

To prevent bile reflux into the stomach

To regulate airflow during swallowing

To prevent gastric reflux into the oesophagus (correct)

What structure is responsible for secreting digestive enzymes into the main pancreatic duct?

Alpha cells

Beta cells

Islets of Langerhans

Acinar cells (correct)

Which part of the small bowel is the longest?

Cecum

Duodenum

Jejunum

Ileum (correct)

Which layer of the gastrointestinal tract is responsible for peristalsis?

Muscularis Signup and view all the answers

What is the main role of Kupffer cells?

Immune response and clearing microorganisms Signup and view all the answers

Which type of molecule is responsible for mediating communication between different parts of the gastrointestinal system?

Enteric hormones Signup and view all the answers

Which phase of swallowing involves the closing of the epiglottis to protect the trachea?

Pharyngeal phase Signup and view all the answers

What is the primary function of the common bile duct?

Draining bile from the gallbladder Signup and view all the answers

What condition is characterized by increased pressure in the portal system?

Portal hypertension Signup and view all the answers

Which of the following is NOT a part of the digestive system?

Spleen Signup and view all the answers

What is the role of digestive lipases?

Break down fats Signup and view all the answers

Which artery is primarily responsible for supplying the small intestine?

Superior mesenteric artery Signup and view all the answers

What is the main component of lymph?

Proteins and fats Signup and view all the answers

Which of the following structures is NOT part of the pharynx?

Epiglottis Signup and view all the answers

What is the main function of gastric juice produced in the stomach?

To aid in protein digestion Signup and view all the answers

Which hormone is primarily responsible for stimulating gastric juice production?

Gastrin Signup and view all the answers

What is the role of intrinsic factor in the stomach?

Facilitates B-12 absorption Signup and view all the answers

Which part of the digestive process is primarily responsible for neutralizing chyme?

Duodenum Signup and view all the answers

How do bile salts facilitate the absorption of lipids?

By forming micelles that transport fat Signup and view all the answers

What stimulates the vomiting reflex?

Toxins and emotional stimuli Signup and view all the answers

Which cell type in the stomach is responsible for secreting pepsinogen?

Chief cells Signup and view all the answers

What is the effect of cholecystokinin (CCK) on gastrin?

Inhibits gastrin release Signup and view all the answers

Which structure in the small intestine increases the surface area for absorption?

Plicae circulares Signup and view all the answers

What is a primary function of the large intestine?

Reabsorption of water Signup and view all the answers

What initiates the intestinal phase of digestion?

Chyme leaving the stomach Signup and view all the answers

Which type of fat is primarily formed into chylomicrons for absorption?

Triglycerides Signup and view all the answers

Which vitamin requires intrinsic factor for absorption?

Vitamin B12 Signup and view all the answers

What is the primary role of pepsin in the digestive process?

Digests proteins into polypeptides Signup and view all the answers

GI quiz

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Questions and Answers

What is the primary function of the lower oesophageal sphincter (LOS)?

What structure is responsible for secreting digestive enzymes into the main pancreatic duct?

Which part of the small bowel is the longest?

Which layer of the gastrointestinal tract is responsible for peristalsis?

What is the main role of Kupffer cells?

Which type of molecule is responsible for mediating communication between different parts of the gastrointestinal system?

Which phase of swallowing involves the closing of the epiglottis to protect the trachea?

What is the primary function of the common bile duct?

What condition is characterized by increased pressure in the portal system?

Which of the following is NOT a part of the digestive system?

What is the role of digestive lipases?

Which artery is primarily responsible for supplying the small intestine?

What is the main component of lymph?

Which of the following structures is NOT part of the pharynx?

What is the main function of gastric juice produced in the stomach?

Which hormone is primarily responsible for stimulating gastric juice production?

What is the role of intrinsic factor in the stomach?

Which part of the digestive process is primarily responsible for neutralizing chyme?

How do bile salts facilitate the absorption of lipids?

What stimulates the vomiting reflex?

Which cell type in the stomach is responsible for secreting pepsinogen?

What is the effect of cholecystokinin (CCK) on gastrin?

Which structure in the small intestine increases the surface area for absorption?

What is a primary function of the large intestine?

What initiates the intestinal phase of digestion?

Which type of fat is primarily formed into chylomicrons for absorption?

Which vitamin requires intrinsic factor for absorption?

What is the primary role of pepsin in the digestive process?

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