BODY CAVITY: spaces within the body that help protect, separate and support internal organs

1. Posterior (dorsal) cavity

1.1. Cranial: contains the brain

1.2. Vertebral cavity: contains the spinal cord

2. Anterior (ventral) cavity

2.1. Thoracic: cavity above the diaphgram

2.1.1. pleural: lung

2.1.2. Mediastinum: mass of structures located between the pleural cavities

2.2. Abdominopelvic

2.2.1. abdominal: upper region

2.2.2. pelvic: lower region