Gastrointestinal Tract (GIT) 2023-2024 Quiz

The main organs of the Digestive System include the liver and gall bladder. True or False?

The small intestine is divided into three parts: duodenum, jejunum, and ileum. True or False?

The majority of digestion and absorption occurs in the small intestine. True or False?

The gastrointestinal tract handles about 8-9 L of fluid per day, majority of which is derived from exogenous sources. True or False?

The major functions of the gastrointestinal tract are the digestion and absorption of nutrients. True or False?

Teeth, tongue, and salivary glands are considered as accessory organs of the Digestive System. True or False?

Fluid reabsorption by the gastrointestinal tract is highly efficient, with only 200-300 mL lost daily in the stools.

Most digestion takes place in the stomach where acid fluid is added to initiate protein digestion by pepsin.

The main components of gastric secretion are hydrochloric acid, pepsin, and amylase.

Disturbances of water, electrolyte, and hydrogen ion homeostasis may occur in small intestinal or colonic disease.

Loss of hydrochloric acid by vomiting may cause a metabolic acidosis.

Gastric secretion is stimulated by the vagus nerve, which responds to stimuli from the cerebral cortex, normally resulting from the sight, smell, and taste of food.

Gastrin secretion is inhibited by acid in the pylorus.

Reabsorption of fluid in the proximal jejunum occurs along the osmotic gradient created by reabsorption of water.

Calcium stimulates gastrin secretion and this may explain the relatively high incidence of peptic ulcers.

Loss of fluid and electrolytes from the upper intestinal tract due to perturbed intestinal cell function may not lead to disturbances of water, electrolyte, and hydrogen ion homeostasis.