Parts and Function of the Respiratory System

1. EDUCATION
IDEA
STRATEGY
TARGET
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Parts and
Function of
Respiratory
System

2. III. Innovation /Intervention Strategy
The respiratory system plays a vital
role in the human body. At the end of
the lesson you should be able to identify
the major parts of the respiratory system
and explain the functions of the
respiratory system.
RESPIRATORY SYSTEM

3. III. Innovation /Intervention Strategy

4. III. Innovation /Intervention Strategy
The respiratory system is an
equally important system of the body
that we cannot live without.
1. It is a system which takes charge of the
breathing process.
2. It is made up of several organs which
is responsible for gas exchange in the
body.
3. The organs help for taking in oxygen
and expelling carbon dioxide from the
body.
4. It is made up of several parts without
different functions namely.

5. III. Innovation /Intervention Strategy
1. Nose
 an organ of the respiratory system found
protruding between the eyes. It is the
part where the air that we inhale enters
and carries out the air that we exhale.

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2. Nasal cavity
 It is the part found inside thee nose. It is
also lined with mucous membrane that
helps keep the nose moist. It is also lined
with hair like structures called cilia which
helps trapped dirt entering the nose

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3. Mouth
 It is a hollow cavity that allows food and air to enter
the body.

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4. Throat (Pharynx)
 It is a muscular tube that runs from the back
of your nose down into your neck It is the
passageway of the air entering the nasal
cavity up to the esophagus and larynx.

9. III. Innovation /Intervention Strategy
5. Voice Box (Larynx)
 It serves as the passageway of air between the
pharynx above and trachea below. It plays an
essential role in human speech

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6. Windpipe (Trachea)
 It is a tube that is about 4 inches long. It is
found just under the larynx or voice box and
then divides into 2 smaller tubes called bronchi.
bronchi.

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7. Bronchial tubes or Bronchi
 These are tubes which serves as the main
passageway of the air entering the lungs.

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8. Bronchioles
 These are passages that branched off
from the bronchi. These are tubes that
hold the air sacs or alveoli.

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9. Air sacs or Alveoli
 These are tiny sacs inside the lungs. It is
the part where the exchange of gas takes
place. It is the part where oxygen is taken
in and carbon dioxide is carried out.

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10. Lungs
 These are pair of spongy, air-filled organs
located on either side of the chest or
thorax.

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11. Diaphragm
 It is a thin skeletal muscle that sits at the base
of the chest and separates the abdomen from
the chest. It contracts and flattens when you
inhale. It creates a vacuum effect that pulls air
into the lungs. It relaxes when you exhale.

16. III. Innovation /Intervention Strategy
Respiratory System Diseases
Common diseases of the respiratory system
include:
 Asthma. Your airways narrow and make too much
mucus.
 Bronchiectasis. Inflammation and infection make
your bronchial walls thicker.
 Chronic obstructive pulmonary disease (COPD). This
long-term condition gets worse over time. It
includes bronchitis and emphysema.
 Pneumonia. An infection causes inflammation in
your alveoli. They might fill up with fluid or pus.
 Tuberculosis. A bacterium causes this dangerous
infection. It usually affects your lungs but might
also involve your kidney, spine, or brain.

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 Lung cancer. Cells in your lung change and grow
into a tumor. This often happens because of
smoking or other chemicals you’ve breathed in.
 Cystic fibrosis. This disease is caused by a problem
in your genes and gets worse over time. It causes
lung infections that don’t go away.
 Pleural effusion. Too much fluid builds up between
the tissues that line your lungs and chest.
 Idiopathic pulmonary fibrosis. Your lung tissue
becomes scarred and can’t work the way it should.
 Sarcoidosis. Tiny clumps of inflammatory cells
called granulomas form, often in your lungs and
lymph nodes

18. III. Innovation /Intervention Strategy
Activities that you observe at home that shows the
value or use of your respiratory system:
 increase your walking speed
 don't smoke
 Add plants to your home
 challenge your lungs to improve your respiratory system
 exercise get fit and stay active
 eat healthy food
 drink lots of water
 wash your hands

19. III. Innovation /Intervention Strategy
Learning Task 1: Match the parts of the respiratory
system in Column A with its description in column B.
Column A
_______1. Nose
_______2. Mouth
_______3. Throat
_______4. Voice box
_______5. Windpipe
_______6. Bronchi
_______7. Bronchioles
_______8. Air sacs
_______9. Lungs
_______10. Diaphragm
Column B
A. It plays an essential role in human
speech
B. These are tubes that holds the air sacs
C. The part where air enters the body
D. Contracts and relaxes when we inhale
and exhale
E. The part where the exchange of gas
takes place
F. A part that allows food and air to enter
the body
G. A tube that is found under the larynx
H. A pair of spongy, air-filled organ
I. A tube that serves as the main
passageway of air
J. A tube that runs from your nose down
to the neck

20. III. Innovation /Intervention Strategy
Learning Task 2: Study the picture of the
respiratory system below. Label the parts
correctly. Do this on your answer sheet.

21. III. Innovation /Intervention Strategy
The respiratory system is the organs and
other parts of your body involved in breathing, when
you exchange oxygen and carbon dioxide.
Parts of the Respiratory System
Your respiratory system includes your:
 Nose and nasal cavity
 Sinuses
 Mouth
 Throat (pharynx)
 Voice box (larynx)
 Windpipe (trachea)
 Diaphragm
 Lungs
 Bronchial tubes/bronchi
 Bronchioles
 Air sacs (alveoli)
 Capillaries

22. III. Innovation /Intervention Strategy
How Do We Breathe?
Breathing starts when you inhale air into
your nose or mouth. It travels down the back of
your throat and into your windpipe, which is
divided into air passages called bronchial tubes.
For your lungs to perform their best,
these airways need to be open. They should be
free from inflammation or swelling and extra
mucus.

23. III. Innovation /Intervention Strategy
Learning Task 3: List down activities that you
observe at home that shows the value or use of
your respiratory system. Write this in your
notebook.
1. _____________________________
2. _____________________________
3. _____________________________
4. _____________________________
5. _____________________________

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25. III. Innovation /Intervention Strategy
Learning Task 1: Match the parts of the respiratory
system in Column A with its description in column B.
Column A
_______1. Nose
_______2. Mouth
_______3. Throat
_______4. Voice box
_______5. Windpipe
_______6. Bronchi
_______7. Bronchioles
_______8. Air sacs
_______9. Lungs
______10. Diaphragm
Column B
A. It plays an essential role in human
speech
B. These are tubes that holds the air sacs
C. The part where air enters the body
D. Contracts and relaxes when we inhale
and exhale
E. The part where the exchange of gas
takes place
F. A part that allows food and air to enter
the body
G. A tube that is found under the larynx
H. A pair of spongy, air-filled organ
I. A tube that serves as the main
passageway of air
J. A tube that runs from your nose down
to the neck
Key Answer
C
F
J
A
G
I
B
E
H
D

26. III. Innovation /Intervention Strategy
Learning Task 2: Study the picture of the
respiratory system below. Label the parts
correctly. Do this on your answer sheet. Key Answer
Nose
Mouth
Voice box
Throat
Wind pipe
Bronchioles
Air sacs
Bronchial tubes
Lungs
Diaphragm
Bronchial tubes

27. III. Innovation /Intervention Strategy
Learning Task 3: List down activities that you
observe at home that shows the value or use of
your respiratory system. Write this in your
notebook.
1. add plants to your home
2. exercise get fit and stay active
3. eat healthy food
4. drink lots of water
5. wash your hands
Key Answer