a. Thoracic cavity - lungs, heart, thymus, esophagus, trachea, and several large vessels
b. Cranial cavity - brain
c. Abdominal cavity - stomach, spleen, liver, gallbladder, small intestine, and most of the large intestine
d. Pelvic. Cavity - urinary bladder, parts of the large intestine, and internal reproductive organs
e. Mediastinum - heart, thymus, esophagus, trachea, and several large vessels