Best Answer: In order for air to enter the lungs 2 things must happen. 1. The diaphragm must contract. This increases the volume ofthe thoracic cavity. 2. The intercostal muscles (rib muscles) will pull he ribs up and outward also increasing the cavity's volume. Bothe of these will decrease the pressure inside the cavity and air will rush in from the outside.
The Ming dynasty (1368â1644), founded by the peasant rebel leader Zhu Yuanzhang (known posthumously as Emperor Taizu), was an imperial dynasty of China. It was the successor to the Yuan dynasty and the predecessor of the short-lived Shun dynasty, which was in turn succeeded by the Qing dynasty. Scholars have traditionally divided Ming history into three distinct periods: Early (1368â1436), Middle (1436â1573), and Late (1573â1644).
The Ming emperors probably exercised more far-reaching influence in East Asia than any other native rulers of China, and their attitude toward the representatives of Portugal, Spain, Russia, Britain, and Holland who appeared in China before the end of their dynasty was a condescending one. Reign names - nian hao. During the Ming dynasty all rulers adopted a reign name (nianhao) for their reign period. The exception was the sixth emperor, who ruled during two period separated by an interval of eight years, that got one reign name each.