Minggu, 24 Maret 2013

Digestive Enzymes

Digestive Enzymes

  • A catalyst is a substance that accelerates (speeds up) a chemical reaction without being permanently changed or consumed itself.
  •  A digestive  enzyme serves as a catalyst, aiding in digestion.
  • Digestion is a chemical process by which food is converted into simpler substances that can be absorbed or assimilated by the body.
  •  Enzymes are manufactured in the salivary glands of the mouth, in the lining of the stomach, in the pancreas, and in the walls of the small intestine.
consists of the structures commonly known together as the mouth. It takes in and initially processes food items.
(1) A tooth has two main parts the crown and the root. A root canal passes up through the central part of the tooth. The root is suspended within a socket (called the alveolus) of one of the jaws of the mouth. The crown extends up above the surface of the jaw. The root and inner part of the crown are made of a substance called dentin. The outer portion of the crown is covered with a substance known as enamel. Enamel is the hardest substance of the human body. The nerves and blood vessels of the tooth pass up into the root canal from the jaw substance.

2) There are two kinds of teeth-- anterior and posterior. The anterior teeth are also known as incisors and canine teeth. The anterior teeth serve as choppers. They chop off mouth-size bites of food items. The posterior teeth are called molars. They are grinders. They increase the surface area of food materials by breaking them into smaller and smaller particles.
(3) Humans have two sets of teeth--deciduous and permanent. Initially, the
deciduous set includes 20 baby teeth. These are eventually replaced by a permanent set of 32.

Sumber : Bpk. Dr. Iskandar Zulkarnain

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