The space in the thoracic cavity between the concave inner surfaces of the lungs, in which (in a special pericardial cavity) the heart is located, is called the mediastinum. The thoracic cavity is lined with a serous membrane called the pleura. The lungs are enclosed in the so-called pleural cavities, which are separate in man but communicate with one another in the majority of mammals. The shape of the thoracic cavity depends upon the shape of the thorax and the position of the diaphragm.
We sell 5 hammock sizes on the Traditional Hammocks (no spreader wood bars). Therefore, the length of the hammock is the same for each size but the difference is the width. Width gives the size. The larger the size, the wider and bigger the hammock.
Queen Size, 2 Person Mayan Hammocks & Mexican Matrimonial Hammocks. The Queen size is like a double hammock, and is a good size for taller people or the perfect, two person hammock. Often known as the Matrimonial, the woven bed expands as wide as 7 feet. This one is an ideal for couples, yet is still compact enough to take along on a camping trip or picnic.