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THE HUMAN DIGESTIVE SYSTEM OESOPHAGUS AND STOMACH v02 Video Lecture - Class 10

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FAQs on THE HUMAN DIGESTIVE SYSTEM OESOPHAGUS AND STOMACH v02 Video Lecture - Class 10

1. What is the function of the esophagus?
Ans. The esophagus is a muscular tube that connects the mouth to the stomach. Its main function is to transport food and liquids from the mouth to the stomach through a series of coordinated muscle contractions called peristalsis.
2. How does the stomach break down food?
Ans. The stomach breaks down food through a combination of mechanical and chemical processes. The muscular walls of the stomach contract and churn the food, mixing it with digestive juices such as hydrochloric acid and enzymes. These digestive juices help break down proteins, fats, and carbohydrates into smaller molecules for absorption.
3. What are the common disorders of the esophagus and stomach?
Ans. Some common disorders of the esophagus include gastroesophageal reflux disease (GERD), esophagitis, esophageal ulcers, and esophageal cancer. Common stomach disorders include gastritis, peptic ulcers, gastric cancer, and gastroenteritis.
4. How does the stomach protect itself from its own digestive juices?
Ans. The stomach has a protective lining composed of mucus, which helps protect it from its own digestive juices. Mucus acts as a barrier between the stomach lining and the acidic environment, preventing damage to the stomach cells. Additionally, the stomach continuously produces new cells to replace any damaged cells.
5. What is the role of the stomach in digestion and absorption?
Ans. The stomach plays a crucial role in the digestion and absorption of food. It secretes digestive juices that break down proteins, fats, and carbohydrates. It also releases the hormone gastrin, which stimulates the production of digestive enzymes. The stomach also helps in the absorption of certain substances, such as alcohol and some medications, into the bloodstream.
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