The document describes the human digestive system. It explains that the digestive system is made up of a long twisting tube called the alimentary canal or digestive tract, which runs from the mouth to the anus. It details the main organs in the digestive system including the mouth, esophagus, stomach, small intestine, large intestine, rectum, anus, and accessory organs like the liver, gallbladder and pancreas. It explains their functions and roles in digesting and absorbing food and eliminating waste.

1. Hi, My
name is
Sonu
Hi, My
name is
Monu

2. Digestive System
Class V
D

4. All living things are made up
of cells. A cell is the smallest
unit of life.
Cells

5. A collection of the same
kind of cells forms a
tissue.
TISSUE

6. Tissues make up organs such
as your eyes, your stomach and
your heart.
ORGAN

7. Several organs work
together to form a body
system.
BODY SYSTEM

10. DIGESTION
The process of breaking down
food into simpler substances that
the body can use is called
digestion.

11. • Our digestive system is
made up of a long,
twisting tube that starts
from the mouth and ends
at the anus.
• This long twisting tube is
called an alimentary
canal or digestive tract.

12. Organs in Digestive system

13. MOUTH
Match the column A with column B
A: Part of mouth
• Teeth
• Tongue
• Salivary gland
B: Function
• roll the food into tiny balls to be
pushed into the oesophagus
• moistens and softens the food
• grinds the food

14. MOUTH
• Teeth grinds the food
• Tongue helps to roll the
food into tiny balls to
be pushed into the
oesophagus (gullet).
• Salivary gland moistens
and softens the food

15. Oesophagus
• Oesophagus is long muscular tube –(8
inches long) that joins from mouth to
stomach
• The muscles in the oesophagus contract
and relax to cause wave-like movements.
These movements allow the food to move
into the stomach.
• These movements of muscles in the
oesophagus are called peristalsis
movement.

18. Stomach
• J- Like or Bag-like shape
• Stores the food for 3-4 hours.
• The food is mixed with digestive
juices and acid that are secreted
from the stomach wall.
• The muscular stomach walls
then help churn this mixture of
food, and digestive juices.
• The stomach then empties this
liquid into the small intestine
(Liquid - chyme)

20. Small Intestine
• As the partially digested food enters
the small intestine. It is mixed with
the more digestive substances
produced by the pancreas and liver.
• Digestion ends in the small
intestine, Nutrients from the digested
food are absorbed by the walls of the
small intestine and enter the
bloodstream.
• The blood then transports the
nutrients to all the parts of the body.

21. Accessory Organs
The salivary glands, liver,
gallbladder, and pancreas are not
part of the digestive tract, but they
have a role in digestive activities and
are considered accessory organs.
• The pancreas is a gland which secrete
pancreatic juice that helps in the
digestion of food in the small intestine.
• The pancreas is about 6 inches long
and located behind the stomach.

23. Liver
• Largest gland in the body
• Bile is a digestive juice that
is secreted by the liver and
stored in the gall bladder.
• It stores and controls
chemicals and removes toxic
substances.

24. Large Intestine
• The undigested food that is
not absorbed passes into the
large intestine.
• Water from the undigested
food is absorbed by the walls
of the large intestine.
• Solid waste is thus formed
and processed into faeces.

25. Rectum
Faeces are stored in
the rectum until they
are ready to be
released.

26. Anus
The faeces are
expelled from the
body by the anus

28. QUIZ
• All living things are made up of ______.
a) cells
b) tissue
c) Organs
d) body system
Ans. a) cells
• A collection of the same kind of cells forms a _____.
a) cells
b) tissue
c) Organs
d) body system
Ans. b) tissue

29. QUIZ
• Several organs work together to form a ________.
a) cells
b) tissue
c) Organs
d) body system
Ans. d) body system
• Our digestive system is made up of a long, twisting tube that starts from
the mouth and ends at the anus. This long twisting tube is called an
________.
a) alimentary canal
b) Small intestine
c) large intestine
d) body system
Ans. a) alimentary canal

30. QUIZ
• Largest gland in the body
a) Rectum
b) Liver
c) Stomach
d) Tissue
Ans. d) Liver
• The undigested food that is not absorbed passes into the _______.
a) alimentary canal
b) Small intestine
c) large intestine
d) body system
Ans. c) large intestine