The boiler generates high pressure steam by transfering the heat of Combustion in various heat transfer sections. This part of the article series briefly describes the flow and arrangement of the heat transfer sections in a boiler. In line diagrams help make the concept clear.
Abnormalities found within vertebral bones are called transitional vertebrae. The spinal cord runs through the middle of the human spine. Chiropractic manipulation may help treat problems caused by misaligned vertebrae. The tailbone, or coccyx, is the lowest segment of the spinal column.
The vertebral centra are unossified, and the tail is strongly heterocercal. From the first dorsal to the last lumbar the vertebral column forms a single curve, most pronounced in the lumbar region. This vertebral column, as it is called, is distinctive of all vertebrates. Pterodactyles show no resemblance to birds in this vertebral articulation.