The Human Body May 2026

The human body is capable of a wide range of functions that are essential for survival. The digestive system, which includes the mouth, esophagus, stomach, and intestines, breaks down food into nutrients that can be absorbed and utilized by the body. The respiratory system, which includes the lungs and airways, brings oxygen into the body and removes carbon dioxide. The immune system, which includes white blood cells, lymph nodes, and organs such as the spleen, protects the body against infection and disease.