powerpoint presentation about digestive system with assessment at the last part

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2. 5/30/2023 2

3. 5/30/2023 3

4. ARRANGE THE
LETTERS TO
DECODE THE
HIDDEN
WORD/WORDS
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5. DIGESTION
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D I
G E S T
I O N

6. INGESTION
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N I
G
E S
T
I O N

7. ABSORPTION
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B P
O
R T
S
A O N
I

8. ASSIMILATION
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M A
I
L T
S
A ON
I S
I

9. EXCRETION
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E I
X E C T
R O N

10. 5/30/2023 10

11. 5/30/2023 11
F O
J
S
D
A
M
I L C
O
G

12. 5/30/2023 12
F O
J
S
D
A
M
I L C
O
G
F O O D

13. 5/30/2023 13
M L N T T O
A U I I N
R

14. M A L N U T R I T I O N
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M L N T T O
A U I I N
R

15. 5/30/2023 15
I T M J
I
N
E S E T E
N

16. 5/30/2023 16
I T M J
I
N
E S E T E
N
I N T E S T I N E

17. 5/30/2023 17
M T
S L D
U E H R
O I T

18. 5/30/2023 18
M T
S L D
U E H R
O I T
M O U T H

19. WHAT BODY ORGAN OR
SYSTEM IS RESPONSIBLE
FOR ALL THE IDENTIFIED
WORDS IN THE 4 PICS 1
WORD?
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20. DIGESTIVE SYSTEM
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FOOD
MOUTH
INTESTINE
MALNUTRITION

21. EXPLORE
5/30/2023 21
• USING THE ACTIVITY SHEET. IDENTIFY OR
LABEL THE PARTS OF THE DIGESTIVE
SYSTEM USING THE WORD BANK WRITTEN
AT THE TOP OF YOUR ACTIVITY SHEET. YOU
WILL BE GIVEN 5 MINUTES TO ANSWER THE
ACTIVITY.

22. Digestion

23. • Digestion refers to the breakdown
of food into smaller components
that can be absorbed into the
bloodstream.
-Lipids to fatty acids
-Proteins to individual amino acids
-Carbohydrates into simple sugars

24. DIGESTION
• Phases Include
1. Ingestion
2. Movement
3. Mechanical and Chemical Digestion
4. Absorption
5. Elimination

25. Types of Digestion
• Mechanical (physical)-occurs in the mouth when food is
physically broken up into smaller pieces
• Chew
• Tear
• Grind
• Mash
• Mix
• Chemical-takes place in the gastrointestinal tract when the
digestive enzymes break down the food into small molecules
• Enzymatic reactions to improve digestion of
• Carbohydrates
• Proteins
• Lipids

26. Digestive System Organization
• GastroIntestinal (Gl) tract
• Tube within a tube
• Direct path between organs
• Structures
• Mouth
• Pharynx
• Esophagus
• Stomach
• Small intestine
• Large Intestine
• Rectum
26

27. Mouth
• Teeth mechanically break
down food into small
pieces. Tongue mixes food
with saliva (contains
amylase, which helps break
down starch).
• Epiglottis is a flap-like
structure at the back of
the throat that closes
over the trachea
preventing food from
entering it. It is located
in the Pharynx.

28. EsophaGus
• Approximately 20 cm long.
• Functions include:
1.Secrete mucus
2.Moves food from the
throat to the stomach using
muscle movement called
peristalsis
• If acid from the stomach
gets in here that’s
heartburn.

29. Stomach
29
• J-shaped muscular bag that stores
the food you eat, breaks it down into
tiny pieces.
• Mixes food with Digestive Juices that
contain enzymes to break down
Proteins and Lipids.
• Acid (HCl) in the stomach Kills
Bacteria.
• Food found in the stomach is called
ChymE.

30. Small Intestine
• Small intestines are roughly 7 meters
long
• Lining of intestine walls has finger-like
projections called villi, to increase
surface area.
• The villi are covered in microvilli which
further increases surface area for
absorption.
30

31. PARTS OF THE SMALL INTESTINE
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Duodenum -is the first
part of the small i It is
located between the st
part of the small
intestine, or jejunum.
Jejunum. It is the
middle section of the
small intestine and is
about 2 meters long..
Ileum. The ileum is the
last part of the small
intestine.

32. • Nutrients from the food pass into the
bloodstream through the small
intestine walls.
• Absorbs:
• 80% ingested water
• Vitamins
• Minerals
• Carbohydrates
• Proteins
• Lipids
• Secretes digestive enzymes
32

33. Large InTestine
• Also known as COLON
• About 1.5 meters long
• Accepts what small intestines
don’t absorb
• Rectum (short term storage
which holds feces before it is
expelled).

34. PARTS OF THE LARGE INTESTINE
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Ascending
Colon
Transverse Colon
Descending
Colon

35. Accessory Organs The Glands
• Not part of the path of food,
but play a critical role.
• Include: Liver, gall bladder,
and pancreas

36. LIVEr
• Directly affects digestion by
producing bile
• Bile helps digest fat
• filters out toxins and
waste including drugs
and alcohol and poisons.
36

37. Gall Bladder
• Stores bile from the
liver, releases it into
the small intestine.
• Fatty diets can cause
gallstones

38. Pancreas
• Produces digestive
enzymes to digest fats,
carbohydrates and
proteins
• Regulates blood sugar
by producing insulin

39. HOW DIGESTION
WORKS?
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40. 5/30/2023 40

41. 5/30/2023 41
Mouth
pharynx
esophagus
stomach
Small
intestine
large
intestine
Rectum
and anus
ingestion
the process of taking food,
drink, or another substance
into the body by swallowing
or absorbing it.
digestion
Absorption
and
assimilation
excretion
breakdown of food into
smaller components that
can be absorbed into the
bloodstream.
absorption is the process of taking
the digested simple molecules into
bloodstream/lymph from the
intestinal villi.
assimilation is the process of
synthesizing new compounds from
the absorbed molecules.
the process of removing
wastes and excess water
from the body.

43. ON A SHEET OF PAPER, WRITE THE
NAME OF EACH COLORED ORGAN:
• Green:
• Red:
• Pink:
• Brown:
• Purple:
• Green:
• Yellow:

44. HOW’D YOU DO?
• Green: Esophagus
• Red: Stomach
• Pink: Small Intestine
• Brown: Large Intestine
• Purple: Liver
• Green: Gall Bladder
• Yellow: Pancreas

45. EXTEND
• ASSIGNMENT:
EXPLAIN HOW DIGESTION WORKS:
1. Song
2. Flowchart
3. Essay
4. Drawing 5/30/2023 45

46. REFERENCES AND LINKS
• Your Digestive System and How It Works
• Digestive system diagram comes from this site
• The Real Deal on the Digestive System
• Pancreas: Introduction and Index
• Your Gross and Cool Body - Digestive System
• Laurentian Regional High School Data Base
- you must know the Username and Password