the presentation "Respiratory System", was prepared for grade VI. it is according to the syllabus of Usman Public School System, Pakistan.

1. CLASS VI
PRESENTATION BY: MISS SALIHA

2. Can you count that
how many times
you breath in 1
minute?
Now multiply it by
1440.
This is the number of
times you breath in
and out in a day.

3. “Physiologically, Respiration is
the transport of oxygen from
the outside air to the cells
within the transport of
carbon dioxide in the
opposite direction.”

4. “Chemically respiration is the
metabolic process by which an
organism obtains energy by
reaction of oxygen with glucose
to give water, carbon dioxide
and energy.”

6. Respiration is exchange of oxygen
and carbon dioxide in the body.

7. It take place in all the cells, of
both plants and animals.

8. Respiration take place throughout
the day and night time, that is 24
hours.
Even when you are asleep.

10. RESPIRATION BREATHING
Respiration is
breaking down of
food to produce
energy.
Breathing is inhaling
oxygen and exhaling
carbon dioxide.

11. Respiratory
system moves
air in and out
of the body,
inhaling oxygen
and exhaling
carbon dioxide

12. Perform breathing.
Supply oxygen in blood.
Cleans or eliminate carbon dioxide
from blood.

13. Inhaling air in
the body
Absorption of
oxygen in the
blood
Discharge/
exhalation of
carbon dioxide

14. The respiratory
system is divided
in to two parts:
1. Upper
respiratory tract
2. Lower
respiratory tract

16. UPPER RESPIRATORY
TRACT
 Nose
 Mouth
 Trachea
LOWER RESPIRATORY
TRACT
 Bronchi
 Bronchioles
 Lungs

17. Air can also enter through nasal passage
It is a hollow passage.
It is lined with mucous membrane,
which bears tiny hairs.
Then air enters trachea

18. FUNCTIONS OF THE NOSE:
1. Filter the air.
2. Warm the air.
3. Moisten the air.
4. The tiny hairs trap the dust particles
5. These hairs also induce sneezing to
remove foreign bodies.

19. Air enters our
body through
mouth OR nose.
Mouth opens into
pharynx OR
throat.
Opening of
nostrils into
pharynx is guided
by soft palate.

20.  Pharynx leads to larynx
through an opening
called glottis.
 Glottis is guarded by an
opening called
epiglottis.
 FUNCTIONS OF LARYNX:
Larynx is responsible in
the production of voice,
through a small chamber
called VOICE BOX.

21.  Trachea or windpipe begins just below the
larynx.
 Trachea is lined with a mucous membrane
 It have hair like projections called CILIA.
 FUNCTIONS:
1. The mucous traps dust and bacteria from
the incoming air.
2. Cilia moves the mucous upward to clear the
respiratory tract.

22. It is a flap In the throat that blocks the
windpipe when food or liquid is being
swallowed.

24.  Trachea divides into
two bronchi
 They are tubes that
carry air to the lungs
 Each bronchi goes in
each lung.
 The walls produce
mucous which is
moved upward by the
cilia to clear the
passage.

25.  Each bronchus divide into further smaller
tubes, called bronchioles.
 There are thousands of bronchioles.
 At the end of each bronchiole is an air sac.

26.  At last bronchioles enter tiny sac like
structures called ALVEOLI.
 Alveoli are tiny, stretchy sacs.
 They have thin moist wall.
 They blow up like balloons when we breath in
 There are about 300 million Alveoli in your
lungs.

28.  Alveoli are covered with narrow blood
vessels called Capillaries.
 The alveoli increase the surface area of the
lings and allow many blood vessels to collect
oxygen.
 Here, Oxygen passes into blood in the
capillaries, through the walls of alveoli.
 This transfer process of oxygen is calle
Diffusion.

31. Pair of lungs (2 lungs).
Balloons like structure.
In the chest, protected by rib cage
Gas exchange take place here.

32. LUNGS RIB CAGE

33. Each lung is protected by two thin
membranes called as Pleural
Membranes.
Within the two membranes is a fluid
filled cavity called pleural cavity.

35.  Diaphragm is a strong muscle, just below the
lungs.
 When you breath in, the diaphragm moves down.
 When you breath out, the diaphragm moves up.

38. NOSE/
MOUTH
PHARYNX
LARYNX
TRACH
EA
BRONCHI
BRONCHIOLES
LUNGS/
ALVEOLI

42.  And where your diaphragm moves..?

43. Inhalation/
Breathe in
Exhalation/
Breathing out
1. Oxygen is inhaled 1. Carbon dioxide is
exhaled.
2. Intercostals muscles
contract.
2. Intercostals muscles
relax.
3. Diaphragm contracts,
or move down.
3. Diaphragm relaxes, or
moves upward.
4. Chest volume
increase.
4. Chest volume
decrease.

44.  When you are
sleepy, lungs do
not get enough
oxygen. So yawn
act as a deep long
breathe.

45.  Sneeze is a
protective action.
It removes
irritants (dust,
pepper) from
mucous membrane
of nose.

46.  Hiccups are
sudden movements
of diaphragm.
 Hiccups can occur
when your
diaphragm is
irritated, or you
have eaten too
fast.

47. If I can’t breathe under water,
HOW CAN A FISH….???

48. Fish breathe
with their GILLS.

50. JAZAKALLAH