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 Qing dynasty was first established in 1636 by the Manchus to designate their regime in Manchuria (now the Northeast region of China). In 1644 the Chinese capital at Beijing was captured by the rebel leader Li Zicheng, and desperate Ming dynasty officials called on the Manchus for aid.