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PHYSIOLOGY & BIOCHEMISTRY STUDY GUIDE LATEST EDITION WITH PICTURE ILLUTRATIONS 100% A+ GTRADED R181,31   Add to cart
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PHYSIOLOGY & BIOCHEMISTRY STUDY GUIDE LATEST EDITION WITH PICTURE ILLUTRATIONS 100% A+ GTRADED
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  • Course
  • PHYSIOLOGY AND BIOCHEMISTRY (PHYBIOCHEM)
  • Institution
  • Chamberlain College Of Nursing

Functions of The Respiratory System ▪ To allow gases from the environment to enter the bronchial tree through inspiration by expanding the thoracic volume. ▪ To allow gas exchange to occur at the respiratory membrane, so that oxygen diffuses into the blood while carbon dioxide diffuses in...

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  • April 25, 2024
  • 54
  • 2023/2024
  • Other
  • Unknown

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  • physiology biochemistry study guide latest editi
  • to allow gases from the environment to enter the

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  • Chamberlain College Of Nursing
  • PHYSIOLOGY AND BIOCHEMISTRY (PHYBIOCHEM)
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Functions of The Respiratory System
▪ To allow gases from the environment to enter the bronchial
tree through inspiration by expanding the thoracic volume.



▪ To allow gas exchange to occur at the respiratory
membrane, so that oxygen diffuses into the blood while
carbon dioxide diffuses into the bronchial tree.


▪ To permit gases in the lungs to be eliminated
through expiration by decreasing the thoracic
volume.



© 2009
Ebneshahidi

,General anatomy of The respiratory System
▪ Consists of a tube that divides into small branching tubes in
the lungs: External nares → nasal cavity → nasaopharynx →
laryngopharynx → larynx → trachea → primary bronchi →
lungs (secondary bronchi → tertiary bronchi → bronchioles →
alveolar sacs → alveoli).




© 2009
Ebneshahidi

,Lungs
▪ Cone – shaped organs located in the thoracic cavity.
▪ Thoracic cavity is lined with a body membrane called
parietal pleura, while the surface of lungs is covered with
visceral pleura.
▪ The thin space between the two pleural membranes is called
pleural cavity which is filled with a clear fluid called plural
fluid to minimize friction between the tissues and to provide
surface tension in the pleural cavity. [water molecules in the
pleural fluid allow the two pleural membranes to adhere to
one another, to prevent collapsing of the lungs].
▪ A chemical substance called surfactant secreted by the
lungs also facilitate the surface tension.

© 2009 Ebneshahidi

, The respiratory Tract – Bronchial Tree




© 2009

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