group 1 science- Grade 9

1. Respiratory System By:
Group 1-ACACIA

3. ACTUAL PHOTO
DRAWING MODEL

4. Bronchioles
Alveoli

8. • empty tube that serves as passageway of air
into the lungs.
• Also called as windpipe.
• connects the pharynx and larynx to the lungs.
• Belongs to the lower respiratory tract.
• Inflammation of the trachea is known
as tracheitis .

10. • Singular (Bronchus)
• two branching tubes that connect the trachea to
the lungs.
• passage of airway in the respiratory tract that
conducts air into the lungs.
• No gas exchange takes place in this part.

12. • hairlike tubes that connect to the
alveoli.
• It’s branches no longer
contain cartilage or glands in
their submucosa.

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14. • airsacs that allow gas exchange in the lungs.
• anatomical structure that has the form of a
hollow cavity.

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16. • is a large air filled space above and
behind the nose in the middle of the face.
• conditions the air to be received by the
other areas of the respiratory tract.
• Each cavity is the continuation
of one of the two nostrils.

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18. • Nostrils
• most anterior part of the nasal
cavity.
• Enclosed by the cartilages of nose
and lined by the same epithelium of the skin.

23. • Q1. What does each part of the “Bunch of Grapes” model
represent, in relation to the breathing system?
• It represents the passages in the breathing system in which
oxygen flows through it then ended up to a round shape air
sac(alveoli) where it filters air and brings out the air again that
have been filtered , if you compare the air sac to the bunch of
grapes they may look like the same how it function in an easy
way on we breathe, the largest stem which holds the other
branches is the trachea. Next is the Bronchi, it’s branching stem
is the bronchioles then the last part is the alveoli.

24. • Q2. How will you describe the pathway of oxygen in the
breathing system?
• It is branching and the pathway gets smaller as the oxygen
goes through it. It looks like a bunch of grapes.
• Q3. What will happen if one part of the system fails to carry
out its function properly?
• It may cause diseases that may also lead to death if not cured.
( PULMONARY DISEASES )

26. • Our breathing system are composed of parts on which air goes
through.
• The air we breathe or the oxygen goes through the nostrils/nose,
nasal cavity, going through the windpipe or trachea, then separates
into two large branches, called bronchial tubes or bronchi , entering
each of the two lungs. It is subdivided many times inside the lungs
forming hair like branches/ tubes called bronchioles. The last part is
the bubble-like bunch of structures called alveoli or airsacs .
• A bunch of grapes is the best model of the air passage of our
breathing system because it shows us detailed information on what it
actually looks like inside our body.
• If some parts of the system failed to do its duty, breathing simulation
will be malfunctioned.

27. By:
Group 1-ACACIA