Body Cavities

The cavities of the body house the internal organs, which
commonly referred to as the viscera. The two main body
cavities are the larger ventral (anterior) and the smaller, dorsal
(posterior) body cavity.

The ventral body cavity constitutes the thoracic cavity and
the abdomino-pelvic body cavity.

The Thoracic cavity houses lung and heart. It is protected by
the rib cage & associated musculature and the sternum
anteriorly. It consists of the right and left pleural cavities and
mediastinum (the portion of tissues and organs that separates
the left and right lung).

Abdomino-pelvic Cavity extends from the diaphragm inferior
to the floor of the pelvis. It is divided into superior abdominal
and inferior pelvic cavity by imaginary line passing at upper
pelvis.

Abdominal cavity contains the stomach, intestine, liver, spleen
and gallbladder.

The pelvic cavity contains urinary bladder, rectum, and
portions of the reproductive organs.
 Human Anatomy and Physiology
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The dorsal body cavity: it constitutes the cephalic cavity
containing brain and the vertebral canal containing the spinal
cord.