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).
For example, the conventional date 1645 marks the year in which the Qing dynasty armies replaced the preceding Ming dynasty according to the dynastic cycle. However, the Qing dynasty was established in 1636 (or even 1616, albeit under a different name), while the last Ming dynasty pretender was not deposed until 1663. This change of ruling houses was a messy and prolonged affair, and the Qing took almost twenty years to extend their control over the whole of China.