Transcript Jordyn

Digestive system
By: Jordyn hall
mouth
Your mouth is one of the most important
parts of your body and if Anything
happened to your mouth it can make it
hard to eat, drink or even smile every day.
Esophagus
 A esophagus
is a muscular tube
connecting to the throat and with the
stomach. The esophagus is about 8
inches long,. The esophagus runs behind
the windpipe ,the heart, and in front of the
spine.
Stomach
The stomach is part of the digestion system
which functions as an important organ of
the digestive tract. The stomach is located
between the esophagus and the small
intestine.
small intestines
The small intestines is part of the
gastrointestinal tract following the
stomach and the large intestines.
Large intestine
 The
colon is a tubular structure that is
around 1.5 m, about one quarter of the
length of the small bowel. Its largest
diameter is at the cecum (7.5 cm) and
narrowest in the sigmoid (2.5 cm).
Liver
The liver holds about one pint (13 percent) of the
body's blood supply at any given moment. The
liver consists of two main lobes, both of which
are made up of thousands of lobules. These
lobules are connected to small ducts that
connect with larger ducts to ultimately form the
hepatic duct. The hepatic duct transports the bile
produced by the liver cells to the gallbladder and
duodenum (the first part of the small intestine).
Appendix
 The
appendix sits at the junction of the
small intestine and large intestine. It’s a
thin tube about four inches long. Normally,
the appendix sits in the lower right
abdomen.
 The function of the appendix is unknown.
One theory is that the appendix acts as a
storehouse for good bacteria,
Pancreas

The pancreas is a gland organ in the digestive
and endocrine system of vertebrates. It is both
an endocrine gland producing several important
hormones, including insulin, glucagon, and
somatostatin, as well as an exocrine gland,
secreting pancreatic juice containing digestive
enzymes that pass to the small intestine. These
enzymes help in the further breakdown of the
carbohydrates, protein, and fat in the chyme.
Gall bladder
 The
gallbladder is a small pouch that sits
just under the liver. The gallbladder stores
bile produced by the liver. After meals, the
gallbladder is empty and flat, like a
deflated balloon. Before a meal, the
gallbladder may be full of bile and about
the size of a small pear.
Enzymes

It may surprise you that there isn't just one
enzyme or molecule that breaks down all the
food we eat. In fact, the process of digestion, or
the breaking down of large pieces of food, is
complex and involves several enzymes, each
with a specific function. Let's look at the range of
enzymes in our digestive system and find out
how each one functions to keep us healthy by
allowing big pieces of food to become small
absorbable molecules.
Bile/bile duct

Bile is a liquid released by the liver. It contains
cholesterol, bile salts, and waste products such
as bilirubin. Bile salts help your body break
down (digest) fats. Bile passes out of the liver
through the bile ducts and is stored in the
gallbladder. After a meal, it is released into the
small intestine.
 When the bile ducts become blocked, bile builds
up in the liver, and jaundice (yellow color of the
skin) develops due to the increasing levels of
bilirubin in the blood.
Mucus
 Mucous
fluid is typically produced from
mucous cells found in mucous glands.
Mucous cells secrete products that are
rich in glycopr Mucous fluid is typically
produced from mucous cells found in
mucous glands.
Chemical digestion

Process of dissolving and chemically converting food for
absorption by cells. In the mouth, food is chewed, mixed
with saliva, which begins to break down starches, and
kneaded by the tongue into a ball for swallowing.
Peristalsis propels it through the esophagus and the rest
of the alimentary canal. In the stomach, food mixes with
acid and enzymes, which further break it down. The
mixture, called chyme, enters the duodenum, the first
part of the small intestine. Bile from the liver breaks up
fat globules. Enzymes from the pancreas and intestinal
glands act on specific molecules, breaking
carbohydrates down into simple sugars, proteins into
amino acids, and fats into glycerol and fatty acids. These
products are absorbed by the bloodstream.
Absorption
 . Absorption
is occurs largely in the small
intestine, which has developed a large
surface area for this purpose. The walls of
theofsmall
numerous.
The walls
the small intestine
intestine containcontain
numerous finger-like
projections called villi,
Mechanical digestion
 Mechanical
digestion breaks down food
into smaller particles so that it can be
easily be processed by the digestive
Salivary amylase
 Salivary
amylase breaks down starch into
sugars , such as rice and potato, taste
slightly sweet as they are chewed because
amylase turns some of their starch into
sugar in the mouth.
villi
 The
large intestine takes about 16 hours to
finish the digestion of the food. It removes
water and any remaining absorbable
nutrients from the food before sending the
indigestible to the Rectum.
Gastric juices
 Gastric
juices are liquids in your stomach
which break down food so that nutrients
can be extracted by your intestines.
Duodenum
 We
have salivary amylase in our mouths
so that carbohydrates begin digestion in
the mouth.
Chyme
 The
chyme is particles of foods that
become small enough, and into the small
intestine, which stimulates the pancreas to
release fluid .. Other secretions from your
body like your pancreas, gallbladder, liver,
and glands in the intestinal wall help in
digestion.
Bibliography
I found my information at ask.com and
Wikipedia and my pictures at
shuttershock.com