This is a ringing that sets in after excessive noise exposure, such as in a rock concert (being too near the speakers) or the explosion of a firecracker. This excessive noise can cause injury to the ear, causing the ringing. The tinnitus will usually clear up on its own, and will last anywhere from minutes to hours.
Mechanical digestion is the actual physical break down of food into smaller pieces. One example of this is mastication (chewing) which occurs in the mouth by the teeth, which act to cut and grind food into smaller pieces. This makes them easier to later digest as it increases the SA of the food molecules.
The Process of Digestion. Digestion is a series of physical and chemical changes by which food taken into the body undergoes hydrolysis (addition of water) and is broken down in preparation for absorption from the digestive tract into the bloodstream.Digestion takes place in the alimentary canal.In the upper section of the tract, mechanical digestion is accomplished by the chewing and grinding of food into smaller pieces, which are then pushed along the digestive tract.he Process of Digestion. Digestion is a series of physical and chemical changes by which food taken into the body undergoes hydrolysis (addition of water) and is broken down in preparation for absorption from the digestive tract into the bloodstream.