16 Questions
Where does the majority of digestion and absorption of carbohydrates, proteins, and lipids occur?
Small intestine
Which segment of the small intestine is the first 20-30 cm in length?
Duodenum
What anatomical modifications aid in the functions of digestion and absorption in the small intestine?
All of the above
Which part of the digestive system is the longest and most convoluted?
Small intestine
When does digestion begin and continue as food travels through the small intestine?
Mouth
What is the movement of nutrients, water, and electrolytes from the lumen of the small intestine into the cell, then into the blood known as?
Absorption
What is the function of villi in the small intestine?
Increase the surface area for absorption
Where are microvilli found in the small intestine?
On the luminal surface of absorptive cells
Which enzyme starts the breakdown of starch molecules in the mouth?
Salivary amylase
What is the main function of peristalsis in the small intestine?
Moves chyme along the intestine
What effect does distension of the small intestine have during a meal?
Enhances motility of the small intestine
What is the composition of sucrose?
Glucose and fructose
What is the function of disaccharidases in the small intestine?
Split disaccharides into monosaccharides
Which part of the small intestine is particularly well developed and increases the absorptive surface area about three-fold?
Villi
What is the role of segmentation in the small intestine?
Exposes chyme to intestinal mucosa for absorption
What enhances the motility of the small intestine during a meal?
Extrinsic nerve stimulation
Test your knowledge on the processes of digestion and absorption in the gastrointestinal tract with this quiz based on Dr. Rosazra Roslan's lecture. Explore the chemical breakdown of food, movement of nutrients and the primary site for digestion and absorption.
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