The abdominal cavity is a large body cavity in humans and many other animals that contains organs. It is a part of the abdominopelvic cavity. It is located below the thoracic cavity, and above the pelvic cavity. Its dome-shaped roof is the thoracic diaphragm, a thin sheet of muscle under the lungs, and its floor is the pelvic inlet, opening into the pelvis.
Structure
thumb|left|300px|The abdominal cavity is labeled 3 in this image, and together with the [[pelvic cavity (4) it makes up the abdominopelvic cavity 6.]]
Organs
Organs of the abdominal cavity include the stomach, liver, gallbladder, spleen, pancreas, small intestine, kidneys, large intestine, and adrenal glands.