The abdominal cavity lies between the thoracic ands pelvic cavities. One landmark to keep in mind is McBurney's point. This is called positive rebound tenderness. This cavity houses the brain and spinal cord. Embryology is the study of development from the fertilized egg to the 9th week in utero.
Pathological anatomy is the study of structural changes associated with disease.
Histology is the microscopic study of tissue structure. Cytology is the microscopic study of cell structure. Radiographic anatomy is the study of the structure of the human body utilizing x-rays. The human body is organized in a most meticulous manner, Figure 9 . Atoms combine in appropriate manners to form molecules in the chemical organization of the body.