Swallowing is a complex act that involves the coordinated activity of the mouth, pharynx, larynx and esophagus (Figure 1). A swallow has four phases: oral preparatory, oral propulsive, pharyngeal and esophageal.3.
Sir Isaac Newton is the founder of the classical mechanics. His three laws of motion, gravitational laws, etc. are the most fundamental & basic laws of nature.
Who Was Isaac Newton? Isaac Newton (January 4, 1643 to March 31, 1727) was a physicist and mathematician who developed the principles of modern physics, including the laws of motion, and is credited as one of the great minds of the 17th century Scientific Revolution.