👉 The term "spinal pleural" refers to a type of tissue or structure that is found in the lower part of the chest and abdomen. This tissue helps to protect the spinal cord, which is responsible for transmitting nerve impulses from the brain to the muscles and other organs within the body. The splanchnopleural tissue can be found in the thoracic cavity (the area between the back and ribs) or in the abdominal cavity (between the waist and midsection).