The document summarizes the key organs of the digestive system and their functions. It identifies the organs of the alimentary canal from the mouth to the large intestine. The mouth, salivary glands, throat, stomach, esophagus, pancreas, liver, small intestine and large intestine are described. Their roles in digestion such as breaking down food, secreting enzymes and acids, absorbing nutrients, and forming and storing waste are highlighted.

1. THE DIGESTIVE
SYSTEM
PRESENTED BY
Miss. SUPRIYA R. GAIKWAD
M.A (Edu) –II
ROLL NO - 1659001

2. OBJECTIVES
By the end of this section, you will be able to:
1. Identify the organs of the alimentary canal
from proximal to distal, and briefly state their
function
2. Identify the accessory digestive organs and
briefly state their function

3. The
Digestive
system

4. ORGAN OF DIGESTIVE SYSTEM
1.Mouth
2.Salivary glands
3.Throat/Pharynx
4.Stomach
5.Oesophagus
6.Pancreas
7.Liver
8.Small Intestine
9.Large Intestine

5. 1.Mouth
The mouth is the
beginning of the digestive
tract; and, in fact,
digestion starts here
when taking the first bite
of food. Chewing breaks
the food into pieces that
are more easily digested,
while saliva mixes with
food to begin the process
of breaking it down into a
form your body can
absorb and use.

6. 2.Salivary
glands
The salivary glands
produce saliva, which
keeps the mouth and
other parts of the
digestive system moist. It
also helps break down
carbohydrates (with
salivary amylase, formerly
known as ptyalin) and
lubricates the passage of
food down from the oro-
pharynx to the esophagus
to the stomach.

7. 3.Throat/
Pharynx
The pharynx is part of
both the digestive and
respiratory systems. For
the digestive system, its
muscular walls function
in the process of
swallowing, and it serves
as a pathway for the
movement of food from
the mouth to the
esophagus.

8. 4.Stomach
The stomach secretes
acid and enzymes that
digest food. Ridges of
muscle tissue called
rugae line the stomach.
The stomach muscles
contract periodically,
churning food to enhance
digestion. The pyloric
sphincter is a muscular
valve that opens to allow
food to pass from the
stomach to the small
intestine

9. 5.Oesophagus
The esophagus is a long,
thin, and muscular tube
that connects the
pharynx (throat) to the
stomach. It forms an
important piece of the
gastrointestinal tract and
functions as the conduit
for food and liquids that
have been swallowed into
the pharynx to reach the
stomach.

10. 6.Pancreas
The pancreas has an
endocrine function
because it releases juices
directly into the
bloodstream, and it has
an exocrine function
because it releases juices
into ducts. Enzymes, or
digestive juices, are
secreted by the pancreas
into the small intestine.

11. 7.Liver
The liver's main job is to
filter the blood coming
from the digestive tract,
before passing it to the
rest of the body. The liver
also detoxifies chemicals
and metabolizes drugs.
As it does so, the liver
secretes bile that ends up
back in the intestines.

12. 9.Small Intestine
The small intestine is the
part of the intestines where
90% of the digestion and
absorption of food occurs,
the other 10% taking place
in the stomach and large
intestine. The main function
of the small intestine is
absorption of nutrients and
minerals from food.
Digestion involves two
distinct parts

13. 8.Large Intestine
The 4 major functions of
the large intestine are
recovery of water and
electrolytes, formation
and storage of faeces and
fermentation of some of
the indigestible food
matter by bacteria. The
ileocaecal valve controls
the entry of material
from the last part of the
small intestine called the
ileum.

14. THANK YOU!!!!!