1. Based on shared function: This is the most common approach. Organs are grouped together based on their collective role in carrying out a major bodily function.
* Example: The digestive system includes the mouth, esophagus, stomach, intestines, and accessory organs like the liver and pancreas. All of these organs work together to break down food, absorb nutrients, and eliminate waste.
2. Based on anatomical location or proximity: This method classifies organs based on their physical location in the body.
* Example: The thoracic cavity houses organs like the lungs and heart, while the abdominal cavity contains the stomach, intestines, liver, and kidneys. This method may not always align perfectly with function, as some organs in the same cavity may have different roles.
While these are two common methods, it's important to remember that organ systems are not always neatly categorized. Some organs can belong to multiple systems, and the boundaries between systems are not always rigid. For example, the pancreas belongs to both the digestive and endocrine systems.
