Do you know what bile is for?
The Digestive System Quiz
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Which organ produces bile that helps in the digestion of fats?CorrectIncorrect
Which of the following are functions of bile?CorrectIncorrect
What is the primary function of carbohydrases in the digestive system?CorrectIncorrect
Arrange the following organs in the order in which food passes through them during digestion.
- Small intestine
Match the enzyme to its primary function.
- Breaks down starch to simple sugars (maltose)
- Breaks down proteins to amino acids
- Breaks down lipids to glycerol and fatty acids
The system is an example of an organ system in which several organs work together to digest and absorb food.
Which of the following is NOT a product of digestion?CorrectIncorrect
After digestion, the products are used to:CorrectIncorrect
Digestive enzymes convert food into small molecules that can be absorbed into the bloodstream.
Where is bile stored before it is released into the small intestine?CorrectIncorrect
Carbohydrases (including amylase), proteases and lipases are all produced in the same organ. What is this organ called?CorrectIncorrect
The digestive system is a complex organ system designed to break down food, allowing the body to absorb essential nutrients. It begins in the mouth, where food is ingested and mechanically broken down. As food travels down the oesophagus, it enters the stomach, where it encounters a highly acidic environment. This acidity aids in the breakdown of food particles.
A crucial component in the digestive process is the action of enzymes. These biological catalysts speed up chemical reactions, ensuring efficient digestion. Carbohydrases, for instance, break down carbohydrates into simple sugars. Amylase, a type of carbohydrase, specifically targets starch. Proteases are responsible for breaking proteins down into amino acids, while lipases convert lipids (fats) into glycerol and fatty acids.
The liver plays a pivotal role by producing bile, an alkaline substance stored in the gall bladder. Bile has two primary functions: neutralizing the stomach’s hydrochloric acid and emulsifying fats. By breaking fats into smaller droplets, bile increases the surface area available for enzymes, enhancing the rate of fat breakdown.
Once digested, the small soluble molecules are absorbed into the bloodstream, mainly through the small intestine. The large intestine further absorbs water and some remaining nutrients. The human digestive system works in tandem with other systems. For instance, it collaborates with the respiratory system to provide oxygen and remove carbon dioxide, and with the circulatory system to transport nutrients.