The ventral cavity is a fluid-filled space in the anterior (front) aspect of the human body that holds and protects internal organs/10%3A_Introduction_to_the_Human_Body/10.5%3A_Human_Body_Cavities). It is one of the two largest body cavities in humans, the other being the dorsal cavity/10%3A_Introduction_to_the_Human_Body/10.5%3A_Human_Body_Cavities). The ventral cavity is made up of two separate cavities, the thoracic cavity and the abdominopelvic cavity, which are separated by the diaphragm/10%3A_Introduction_to_the_Human_Body/10.5%3A_Human_Body_Cavities). The abdominopelvic cavity is further divided into the abdominal cavity and pelvic cavity, but there is no physical barrier between the two/10%3A_Introduction_to_the_Human_Body/10.5%3A_Human_Body_Cavities). The ventral cavity allows for considerable changes in the size and shape of the organs inside as they perform their functions. Organs such as the lungs, stomach, or uterus, for example, can expand or contract without distorting other tissues or disrupting the activities of nearby organs. The ventral cavity contains various organs, including the lungs, heart, stomach, intestines, reproductive organs, and urinary bladder/10%3A_Introduction_to_the_Human_Body/10.5%3A_Human_Body_Cavities). The thoracic cavity contains the lungs, heart, breast tissue, thymus gland, and blood vessels, while the abdominal cavity contains digestive organs, spleen, and kidneys, and the pelvic cavity contains the urinary bladder, internal reproductive organs, and rectum/10%3A_Introduction_to_the_Human_Body/10.5%3A_Human_Body_Cavities).