Final answer:
The hollow viscera include the stomach, small intestine, and bladder, which change shape based on their content and are enveloped by the visceral peritoneum within the ventral cavity.
Step-by-step explanation:
The hollow viscera are various cavities in the body that change shape depending on their contents and are not normally palpable. These hollow organs play significant roles within the ventral cavity, which is divided into the thoracic and abdominopelvic cavities. Examples of hollow viscera include the stomach, small intestine, and bladder. They are enveloped by the visceral peritoneum and are part of the digestive and excretory systems. Unlike these three organs, the spleen is a solid organ that is part of the lymphatic system and is responsible for filtering blood.