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.
Sir Isaac Newton: all this and more! Dorling Kindersley/The Agency Collection/ Getty Images. You may know Sir Isaac Newton (1642-1727) as that apples-and-gravity guy, but the inscription on his tomb at Westminster Abbey hints at far greater wonders.