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.
Isaac Newton is well known as one of the greatest scientists who ever lived. Less well known is his deep belief in God and his conviction that scientific investigation leads to a greater knowledge of God the Creator of the universe. Isaac Newton was born at Woolthorpe, Lincolnshire, England on Christmas Day 1642.