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.
But donât worry, you donât need a protractor in your pack either, the angle will always be correct if you just follow the guidelines below. Exactly how tight or loose to hang the hammock can be a matter of personal preference, but thereâs definitely a âsweet spotâ that creates the ideal hammock curve. For our Single and Double Hammocks that ridgeline length is around 9â (108 inches) to get an ideal hammock curve.