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.
The pericardium is the membrane that surrounds and protects the heart. It is composed of two layers separated by a narrow cavity. The inner layer is firmly attached to the heart wall and is known as the visceral layer or epicardium. The outer layer is composed of relatively inelastic connective tissue and is termed the parietal layer. This fibrous layer prevents distension of the heart, thus preventing excessive stretching of the heart muscle fibres.