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.
And because of his extensive contributions, Sir Isaac Newton is regarded as one of the most influential scholars in the history of science. But what exactly did he discover? Newtonâs Three Laws of Motion: