open spaces or compartments in the human body that contain the well ordered arrangement of its internal organs

The open spaces or compartments in the human body that contain the well-ordered arrangement of internal organs are commonly referred to as body cavities. These cavities provide protection, support, and space for the organs to function properly. There are two main body cavities:

1. Dorsal Body Cavity:

• Cranial Cavity: Contains the brain and is protected by the skull.
• Vertebral (Spinal) Cavity: Houses the spinal cord and is protected by the vertebrae.

2. Ventral Body Cavity:

• Thoracic Cavity: Located above the diaphragm and contains the heart and lungs. It is further divided into the: Pleural Cavities: Each surrounds a lung.
• Pericardial Cavity: Surrounds the heart.
• Abdominopelvic Cavity: Located below the diaphragm and further divided into: Abdominal Cavity: Contains organs such as the stomach, liver, intestines, and kidneys.
• Pelvic Cavity: Contains organs such as the reproductive organs, bladder, and parts of the intestines.