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).
Ming Dynasty Timeline Timeline Description: They Ming Dynasty ruled China from 1368 to 1644. It was a period of native Chinese leadership that came in between Mongol and Manchu rule. It was founded by Zhu Yuanzhang, who proclaimed himself emperor in Yingtian. Date Event 1367 Zhu Yuanzhang's army eliminates the military forces of the Yuan Dynasty. After a seven-year battle, Zhu Yuanzhang's army ends the rule of the Yuan Dynasty. Several years earlier Zhu had taken his army into Jiqing, established a military base there as part of his plan to control all of China. 1368 Zhu declares himself the emperor of China.