a. Thoracic cavity includes the major organs of the respiratory and cardiovascular systems, such as the heart and lungs, as well as the esophagus and the thymus gland.
b. Cranial cavity contains the brain, the meninges of the brain, and cerebrospinal fluid.
c. Abdominal cavity contains the diaphragm, liver, gallbladder, stomach, large intestine, small intestine, pelvis, rectum.
d. Pelvic Cavity contains reproductive organs, the urinary bladder, the pelvic colon, and the rectum.
e. Mediastinum contains the heart, thymus gland, and portions of the esophagus and trachea.