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.
Diaphragm and Phrenic Nerve. ++. The diaphragm is a large dome shaped muscle that separates the chest and abdominal cavities. The lower edge of the diaphragm is attached to the inner surface of ribs 6 through 12, the xiphoid process of the sternum and the upper 2 or 3 lumbar vertebrae (L1, L2, L3) .The muscles of the diaphragm converge at itâs top in the central tendon.he phrenic nerves arise from the 3rd through 5th spinal nerves. Spinal cord injury above the level of the third vertebrae can cause disruption of nerve impulses that travel from the brain to the phrenic nerves. This can cause paralysis of the diaphragm and the need for the injured person to be on a respirator.