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.
ORAL
COMPLEX
consists
of the structures commonly known together as the mouth. It takes in and initially
processes food items.
Teeth.
(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
#posting tugas cyberprenership
ahmad baihaqi
NIM 1112503964
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