a. Thoracic cavity: thymus gland, breasts, heart, lungs, tracheobronchial tree, and pleurae
b. Cranial cavity: brain, meninges of the brain, and cerebrospinal fluid
c. Abdominal cavity: stomach, small intestine, large intestine, liver, spleen, gallbladder, pancreas, uterus, fallopian tubes, ovaries, kidneys, ureters, bladder, and many blood vessels (arteries and veins)
d. Pelvic cavity: urinary bladder, distal ureters, proximal urethra, terminal sigmoid colon, rectum, and anal canal
e. Mediastinum: heart, thymus gland, and portions of the esophagus and trachea