Diaphragm
Your question is not clear, but the diaphragm is the muscle that divided the abdomen from the thorax (the chest cavity from the abdominal cavity). Ventral is term that is used mostly in veterinary medicine and it refers to the side of the body that has the belly button.
Liver :)
The lungs are their own organ but they are located in the thoracic cavity
The pleural cavity, also known as the thoracic cavity, is where the lungs and the heart are located.
The heart is a vital organ located in the thoracic cavity, between the lungs. It is responsible for pumping blood throughout the body, delivering oxygen and nutrients to cells and removing waste products.
the heart
thoracic cavity
The lungs and heart are in the thoracic (chest) cavity.
Those in the Thoracic Cavity are the heart and lungs. ' The Abdominal Cavity holds the digestive organs.
The vital cavity refers to the main body cavity where most vital organs are housed, such as the heart, lungs, and digestive organs. It is also known as the thoracic and abdominal cavities. These cavities protect and support organ function within the body.
The soft spongy cone-shaped organ located in the thoracic cavity is the lung. The lungs are responsible for the exchange of gases, oxygen and carbon dioxide, with the surrounding blood vessels in order to facilitate respiration.
The liver is an internal organ which lies in the abdominal cavity of the body of animals. In humans, it is the largest glandular organ of the body, and generally weighs about 3 lb (1.35 kg).