the transverse plane
The sectional plane that separates the thorax from the abdomen is the transverse plane, specifically at the level of the diaphragm. The diaphragm is a dome-shaped muscular structure that forms the boundary between the thoracic cavity, which houses the lungs and heart, and the abdominal cavity, which contains digestive organs. This plane is crucial for understanding the organization of the body's cavities in anatomy.
CT scan
The medial region of the abdominal surface overlying the stomach is called epigastric region just below the diaphragm that separates the abdominal cavity with the pulmo cardic cavity. This region can be located by running the index finger and middle finger at the end of the rib cage that meets the sternum and about four fingers left of the sternum..
thoracic verterbrae
Sagital
The x and y axes separate the coordinate plane into 4 quadrants.
The axes separate the plane into four quadrants.
In humans and other mammals the thorax and abdomen are separated by a sheet of muscle called the diaphragm. In insects like wasps and bees where there is a narrow region between the thorax and the abdomen this is called the petiole.
the area present between two lungs in chest cavity is called mediastenum.this is the place where heart is present.The mediastinum lies between the right and left pleuræ in and near the median sagittal plane of the chest. It extends from the sternum in front to the vertebral column behind, and contains all the thoracic viscera excepting the lungs. It may be divided for purposes of description into two parts: an upper portion, above the upper level of the pericardium, which is named the superior mediastinum; and a lower portion, below the upper level of the pericardium. This lower portion is again subdivided into three parts, viz., that in front of the pericardium, the anterior mediastinum; that containing the pericardium and its contents, the middle mediastinum; and that behind the pericardium, the posterior mediastinum.
engines, wings, tail-rudder, landing gear,
Quadrant.