The digestive system breaks down food into smaller molecules that the body can absorb. Mechanical digestion (chewing) and chemical digestion (enzymes) occur in the stomach and intestines. Nutrients like glucose, amino acids, and fatty acids are absorbed into the bloodstream, providing energy and building blocks for cells.
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The digestive system breaks down food into smaller molecules to extract nutrients, which are then absorbed into the bloodstream to support bodily functions. It begins with mechanical and chemical digestion in the mouth, followed by enzymatic breakdown in the stomach and small intestine. Nutrient absorption occurs in the small intestine, while the large intestine absorbs water and forms waste for excretion. This system ensures the body gets essential energy, vitamins, and minerals for growth, repair, and energy production.
The digestive system's main function is to break down the food we eat into smaller parts, so our body can absorb and use the nutrients for energy, growth, and repair.
When we eat, food travels through the mouth, where it’s chewed and mixed with saliva. This helps break it into smaller pieces. The food then moves to the stomach, where it’s mixed with stomach acids and enzymes that break it down even further.
From the stomach, the partially digested food moves into the small intestine. Here, digestive juices from the pancreas and liver help break down the food even more. Tiny structures in the small intestine, called villi, absorb the nutrients—like vitamins, minerals, and proteins—into the bloodstream. These nutrients are then carried to different parts of the body to be used.
The leftover food, which cannot be digested, moves to the large intestine, where water is absorbed, and the remaining waste is eventually excreted.
So, the digestive system works like a machine that turns food into the fuel and building blocks our body needs, while also getting rid of what we don’t need.
When we eat, food travels through the mouth, where it’s chewed and mixed with saliva. This helps break it into smaller pieces. The food then moves to the stomach, where it’s mixed with stomach acids and enzymes that break it down even further.
From the stomach, the partially digested food moves into the small intestine. Here, digestive juices from the pancreas and liver help break down the food even more. Tiny structures in the small intestine, called villi, absorb the nutrients—like vitamins, minerals, and proteins—into the bloodstream. These nutrients are then carried to different parts of the body to be used.
The leftover food, which cannot be digested, moves to the large intestine, where water is absorbed, and the remaining waste is eventually excreted.
So, the digestive system works like a machine that turns food into the fuel and building blocks our body needs, while also getting rid of what we don’t need.
The digestive system's function is to break down food into smaller components, allowing the body to absorb essential nutrients and eliminate waste. It starts with the mouth, where food is chewed and mixed with saliva to begin the breakdown of carbohydrates. The food then moves through the esophagus to the stomach, where gastric juices further break down food into chyme. In the small intestine, enzymes continue the digestion process, and the walls absorb nutrients like vitamins, minerals, proteins, fats, and carbohydrates into the bloodstream. The remaining waste passes into the large intestine, where water is reabsorbed before elimination. This process ensures the body gets the nutrients it needs for energy, growth, and cell repair.