RRB NTPC Typing Test 3

The digestive system is a vital part of the human body that allows us to convert food into energy and essential nutrients. Every meal we eat begins a detailed internal process that happens automatically. We may not notice it, but our body carefully breaks down each bite into smaller components that can be absorbed and used. This system does not only help us gain strength but also supports growth, repair of tissues, and protection from illness. Without digestion, even the healthiest food would be useless because the body would not be able to extract what it needs. The digestive system works continuously throughout our lives, making it one of the most hardworking systems in the body. The process of digestion begins in the mouth. As soon as food enters, the teeth start grinding and breaking it into smaller pieces. This action makes swallowing easier and prepares the food for further digestion. Saliva is released from glands inside the mouth and mixes with the chewed food. This liquid softens the food and begins breaking down certain nutrients, especially starches. The tongue plays an important role by moving the food around and pushing it toward the throat when we swallow. After swallowing, the food travels through a muscular tube called the esophagus. The movement through this tube happens because of automatic muscle contractions that gently push the food downward into the stomach. The stomach is a strong, flexible organ that acts like a temporary storage chamber. It mixes food with powerful digestive liquids. These liquids contain acid and enzymes that help break down proteins and kill many harmful microorganisms. The stomach muscles contract in a rhythmic motion, turning the food into a semi-liquid mixture. This process may take several hours depending on the type of food eaten. Heavy or fatty meals usually take longer to digest than lighter meals. Once the food reaches the right consistency, it slowly moves into the small intestine for further processing.