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Summary The Respiratory System R125,00
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Summary The Respiratory System
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Understand how your body breathes with this visual and user-friendly guide. It explains the mechanics of inhalation and exhalation, the role of the lungs, health issues related to the lungs, and gas exchange at the alveoli. Key terms like trachea, bronchi, and diaphragm are explained with diagrams....

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  • December 10, 2024
  • 6
  • 2022/2023
  • Summary

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Respiratory
system
• Organs that supply the body cells with
oxygen and remove carbon dioxide.



Pleural Cavity Ribs

Bronchi




Epiglottis




Lungs

, Functions
• Nasal cavity à the space in the nose and deeper inside the
skull, allowing air to be drawn into the trachea. Connected
to the mouth.
• Pharynx à carries air, food and fluid down from the nose
and mouth.
• Epiglottis à the flap that closes the trachea when we
swallow.
• Larynx à the voice box that contains the vocal cords.
• Trachea à a tube that carries air down into the lungs.
• Bronchus à a branch of the trachea that takes the air into
each lung.
• Bronchiole à the smallest branch of the tubes in the lungs
that takes air to the alveoli.
• Alveoli à the air sacs where gaseous exchange takes
place. Oxygen diffuses from the alveoli into the blood.
Carbon dioxide diffuses from the blood into the alveoli to be
exhaled.
• Ribs and Sternum à bones in the chest that offer protection
for the heart and lungs.
• Pleural cavities/membranes à two membranes that
surround the lungs. In between the membranes is a fluid
which helps to prevent friction when the lungs and heart are
moving.
• Diaphragm à the diaphragm contracts and flattens and
the chest cavity enlarges. This contraction creates a
vacuum, which pulls air into the lungs.

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