The intestines are a long, tube-like structure in the human body that plays a crucial role in digestion. They are divided into two main parts: the small intestine and the large intestine. The small intestine is where most of the digestion and nutrient absorption occurs, while the large intestine is responsible for absorbing water and forming waste. The intestines are lined with tiny finger-like projections called villi, which help increase the surface area for absorption. They also contain beneficial bacteria that aid in breaking down food. Proper functioning of the intestines is essential for overall health and well-being.