Search on: WORK OF BREATHING 
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Descriptor English:   Work of Breathing 
Descriptor Spanish:   Trabajo Respiratorio 
Descriptor Portuguese:   Trabalho Respiratório 
Synonyms English:   Breathing Work
Breathing Works  
Tree Number:   E01.370.386.700.975
G09.772.965
Definition English:   RESPIRATORY MUSCLE contraction during INHALATION. The work is accomplished in three phases: LUNG COMPLIANCE work, that required to expand the LUNGS against its elastic forces; tissue resistance work, that required to overcome the viscosity of the lung and chest wall structures; and AIRWAY RESISTANCE work, that required to overcome airway resistance during the movement of air into the lungs. Work of breathing does not refer to expiration, which is entirely a passive process caused by elastic recoil of the lung and chest cage. (Guyton, Textbook of Medical Physiology, 8th ed, p406) 
History Note English:   72(71) 
Allowable Qualifiers English:  
DE drug effects ES ethics
GE genetics IM immunology
PH physiology RE radiation effects
Record Number:   27933 
Unique Identifier:   D014939 

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