JAMB - Biology (2006 - No. 5)
The organ situated in the pericardial cavity of a mammal is the
heart
liver
stomach
spleen
Пояснення
The heart is the organ located in the pericardial cavity of a mammal. The pericardial cavity is a sac that surrounds the heart and contains a small amount of fluid.
In mammals, the pericardial cavity, a space surrounding the heart, is located within the mediastinum, a region of the thoracic cavity, specifically between the lungs and sternum.