a. Thoracic cavity- Heart and Lungs
b. Cranial cavity-Brain
c. Abdominal cavity- Stomach, spleen, liver, gallbladder, small and most of large intestine.
d. Pelvic cavity- Urinary bladder, portion of large intestine, internal organs of reproduction
e. Mediastinum- Heart, thymus, esophagus, trachea, and several large blood vessels.
Source: Tortora, G. J., & Derrickson, B. (2011). Principles of anatomy & physiology. (13th ed., p. 17). Danvers, MA, Wiley.