PHYSIOLOGY & BIOCHEMISTRY STUDY GUIDE LATEST EDITION WITH PICTURE ILLUTRATIONS 100% A+ GTRADED
3 views 0 purchase
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...
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.
,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).
,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.
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Oliver799. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.