Singapore Singapore is no# 10 on the list with an average internet speed of 30.7 megabits per second. It made it on the list of the top ten with a peak speed that is almost double the global average of 15.9 megabits per second.
Structure [edit]. The diaphragm is a dome-shaped structure of muscle and fibrous tissue that separates the thoracic cavity from the abdomen. The dome curves upwards. The superior surface of the dome forms the floor of the thoracic cavity, and the inferior surface the roof of the abdominal cavity. As a dome, the diaphragm has peripheral attachments to structures that make up the abdominal and chest walls.
The thoracic diaphragm is essentially a large muscle. Like all muscles, it has tendons that attach to the muscles and secure it. The diaphragm is attached to the inside of the ribs, to the back of the breastbone and the spine. The muscle fibers then meet in the middle of the diaphragm at the central tendon.