For centuries the gondola was the chief means of transportation and most common watercraft within Venice. It is propelled by a gondolier. In modern times the iconic boats still have a role in public transport in the city, serving as traghetti (ferries) over the Grand Canal.ondola Races on the Grand Canal of Venice, by Grigory Gagarin (1830s). The image shows so-called gondolinos, a slimmer and light-weight version of the gondola specifically built for racing and elegant outings.
Pericardium: The conical sac of fibrous tissue that surrounds the heart and the roots of the great blood vessels. The pericardium's outer coat (the parietal pericardium) is tough and thickened, loosely cloaks the heart, and is attached to the central part of the diaphragm and the back of the breastbone.
1 The serous pericardium consists of two layers: a parietal pericardium and a visceral pericardium. 2  The parietal pericardium is fused to the internal surface of the fibrous pericardium and is so closely adherent to it that they are difficult to separate. The pericardium consists of two parts : (1) a strong external layer composed of tough fibrous tissue, called the fibrous pericardium, and (2) an internal double-layered sac composed of a transparent membrane called the serous pericardium.