10 Questions
What is the role of salivary amylase in the digestive process?
It starts the digestion of starch in the food
Where does mechanical digestion take place in the human digestive system?
Mouth and small intestine
What percentage of starch is hydrolyzed into disaccharide in the oral cavity?
30%
Which substance in saliva provides the ideal alkaline pH for amylase to work?
Hydrogen carbonate
What is the main function of mechanical digestion?
Physical breakdown of large food pieces into smaller pieces for enzyme access
What is the role of segmentation contractions in digestion?
Segmentation contractions in the small intestine aid in mechanical digestion by mixing and moving food for optimal nutrient absorption.
How does mastication contribute to digestion?
Mastication, or chewing, is a form of mechanical digestion that breaks down large food pieces into smaller fragments for enzyme action.
What are the main components of saliva and their respective functions in digestion?
Saliva contains salivary amylase for starch digestion, mucus for food lubrication, hydrogen carbonate for creating an alkaline pH for amylase, and electrolytes for maintaining balance.
Explain the process of chemical digestion in the human digestive system.
Enzymes in the digestive system break down food into small compounds that the body can utilize for energy and nutrition.
How is the breakdown of large food pieces facilitated in the small intestine?
The breakdown of large food pieces in the small intestine is facilitated through segmentation contractions, which mix and break down the food for absorption.
Test your knowledge about the processes involved in digestion, including mechanical and chemical breakdown of food, absorption of nutrients, and the role of the small intestine.
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