Here are some examples:
* Digestive system: Includes the mouth, esophagus, stomach, small intestine, large intestine, and rectum. It breaks down food and absorbs nutrients.
* Respiratory system: Includes the nose, pharynx, larynx, trachea, bronchi, and lungs. It takes in oxygen and releases carbon dioxide.
* Circulatory system: Includes the heart, blood vessels, and blood. It transports oxygen, nutrients, and waste throughout the body.
* Nervous system: Includes the brain, spinal cord, and nerves. It receives and processes information, and controls bodily functions.
Each organ system plays a vital role in keeping the body functioning properly.
