Digestive System Ingestion Absorption

DIGESTIVE
SYSTEM
Ingestion & Absorption
Teacher: DARELL B. PALARAO
Class Rules
1 3
Always follow
2 Participate in
health protocols class activities
Raise your hands
when asking
questions
Objectives
1 Describe the process of ingestion and
absorption
2 Perform the first two processes of

digestion
Develop the correct habit of eating for proper

3 digestion and nutrition
ACTIVITY 1:
GENIUS
CHALLENGE
Direction: Pick a paper strip and
!
identify what organ is being referred
based from its function.
.
MOUTH
ESOPHAGUS
LIVER
STOMACH
GALL BLADDER
PANCREAS
LARGE INTESTINE
SMALL INTESTINE
RECTUM ANUS
Which among these Why do we need
foods is your to eat?
favourite?
Why do we need to eat?
for energy, to keep warm, for growth and
repair. We need nutrients on a daily basis in
order to stay healthy and survive
Activity 2: Ingestion
Objective: After performing this activity, you should be able

to explain the process of ingestion.
.
Direction: Try to eat the chocolate you have and answer the guide
questions individually. After the activity, report your answers to
the class.
Activity 3: Absorption
Objective: After performing this activity, you should be able

to explain the process of absorption.
.
Direction: Students will be grouped into three with 5-6 members but
activity worksheets will be provided individually. Each member of
the group will do 1 procedure and answer the guide questions
afterwards.
PRESENTATION OF ANSWERS
PRESENTATION
Activity 2: Ingestion
Activity
Activity 3:
Absorption Activity
ACTIVITY 4
WORD
GuessROUNDUP!
the scrambled words in 10
seconds.
TMHUO
MOUTH
LVASIA
SALIVA
GUETON
TONGUE
HEETT
TEETH
NSIEGTOIN
INGESTION
DIGESTION
It is the breakdown of
food into small
molecules that cells
can absorb and use.
Where does digestion
start?
•Ingestion
•Absorption It starts in
•Assimilation the mouth!
•Excretion
INGESTION
Ingest= “to take in”
It refers to the entry of food into
the digestive tract through the
mouth.
In activity 1, your teeth,
tongue and saliva work
together!
What do your teeth
do?
Tear
Cut
Grind
Why is it called as
mechanical digestion?
It refers to the
tearing, grinding
and chewing of food
into small pieces.
Saliva- moisten food
- contains digestive enzyme amylase
What might happen when we

don’t make enough saliva?
Chemical Digestion
It refers to the
breaking down of
food by acids and
enzymes into its
basic units. food that has been
BOLUS-
chewed and mixed with
saliva
NUIRTENTS
NUTRIENTS
RTASNOPRT
TRANSPORT
IVLLI
VILLI
MLALS ENITSETNI
SMALL
INTESTINE
AOOSBPRTIN
ABSORPTION
ABSORPTION
It is the movement of digested food molecules from the
small intestine to the blood.
Where does our food go after being
digested in the stomach?
Small
Intestine
In activity 2, the sock served as the

small intestine where absorption of
water & nutrients happens!
Villi
These are finger-like
structures in the small
intestine that help
absorb nutrients and
transport it into the
bloodstream.
Why is there a need to break down food
into smaller molecules?
Easy absorption
into the cells
Digestive System & Other Organ Systems
Is the Digestive System connected to other organ

systems?
Our digestive system absorbs water and

nutrients from the food you eat. Your
circulatory system carries oxygen, water, and
nutrients to cells throughout your body.
Digestive & Circulatory System

The digestive system breaks down food and

uses muscular contractions to move food through
the digestive tract thus, it needs oxygen to
function properly.
Digestive & Respiratory System

The digestive system breaks down the food

you eat into nutrients that provide energy and
building materials for cells while the excretory
system removes waste from the body.
Digestive & Excretory System

Nutrition, Food and Digestion
Eating healthy foods with the right amount of

nutrients is necessary.
“Walang Labis , Walang Kulang”

Assessment
Fill in the missing words in the given text.
The ________ is an organ system uniquely constructed to do its job of

turning your food into _______ and _____ you need to survive. Food enters the
digestive system through the _______. This process is called_____. Once in the
mouth, the food is chewed to form a ball of food called a ______. This then passes
down the esophagus and into the stomach. The food substances you consume
break down into nutrients and ______ by the body to be used for energy, growth
and repairing of cells, a process called_____. This happens in the _______. When
it’s done, your digestive system handily packages your ______ for disposal when
you have a bowel movement.
Assessment
Fill in the missing words in the given text.
digestive
The ________
system is an organ system uniquely constructed to do its job of
turning your food into _______ andnutrients energy
_____ you need to survive. Food enters the
digestive system through the _______. This process is called________.
mouth Once in
Ingestion
the mouth, the food is chewed to form a ball of food called a ______. This then
passes down the esophagusbolus and into the stomach. The food substances you
consume break down into nutrients and ______ by the body to be used for energy,
growth and repairing of cells, a process called__________. This happens in
absorb
the______________. When it’s done, your digestive system handily packages
Absorption
your ____________ small
for disposal
intestine when you have a bowel movement.
solid waste
Activity 5. Puzzle Game
Direction: Complete the puzzle below. Refer to the definitions to answer.
Across:
3. A macromolecule that helps repair and build your
body's tissues, allows metabolic reactions to take
place and coordinates bodily functions.
4. A macromolecule that has to do with the storage
and expression of genetic information
5. It is the process of synthesizing simple
macromolecules absorbed from the digested food
molecules.
6. These are sugar molecules that provide energy for
the body.
Down:
1. These are large, complex molecules.
2. Any of various organic compounds that are insoluble in water
such as fats, waxes, oils and hormones.
Thank You!
Ingestion & Absorption
DIGESTIVE SYSTEM

Digestive System Ingestion Absorption

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DIGESTIVE

2 Perform the first two processes of

Develop the correct habit of eating for proper

Objective: After performing this activity, you should be able

Objective: After performing this activity, you should be able

What might happen when we

In activity 2, the sock served as the

Is the Digestive System connected to other organ

Our digestive system absorbs water and

Digestive & Circulatory System

The digestive system breaks down food and

Digestive & Respiratory System

The digestive system breaks down the food

Digestive & Excretory System

Eating healthy foods with the right amount of

“Walang Labis , Walang Kulang”

The ________ is an organ system uniquely constructed to do its job of

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