(viscus) General anatomical term that refers to any organ that is located within the body cavity (or in its extension, in the scrotum); it consists of organ parts that are embryologically derived from endoderm, splanchnic mesoderm or intermediate mesoderm; together with other organs, the viscus constitutes the respiratory, gastrointestinal, urinary, reproductive and immune systems, or is the central organ of the cardiovascular system. Examples: heart, lung, esophagus, kidney, ovary, spleen.

Anatomical set that consists of all viscus organs. Examples: abdominal viscera, thoracic viscera, pelvic viscera.

Any of the large interior organs in any one of the three great cavities of the body, especially in the abdomen.

The internal organs, especially those found in the abdomen.

The soft internal organs of the body, including the lungs, the heart, and the organs of the digestive, excretory, and reproductive systems.

Two or more internal organs.

(set of viscera) Set of organs located in the body cavity. Examples: set of viscera of abdomen, set of viscera of thorax, set of viscera of pelvis.