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.
Definition of inertia. Isaac Newton is the one who formulated a great definition of inertia. Also known as Newton's first law or law of inertia, Newton restated Galileo's idea. Below is what Newton said in simple terms: If an object is already moving, it will keep moving in a straight line at constant speed unless a force stops it.