Physiological Anatomy of the Lungs

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                                Formation and course 
of the Pulmonary veins 
Having now traced the blood brought 
by the Pulmonary artery and having 
seen that every portion of it reaches the leaflets, 
and is there distributed in such a manner as 
to be <s>exposed<\s> suited to its fullest exposure to 
the atmosphere, but not in any degree so as to 
furnish any structure with its supplies for its repairs or construction, it remains to be 
seen in what way this blood, now become arte=
=rialized is collected again into the veins, which 
are to conduct it back to the heart - 
The arrangement by which this is done, would 
be altogether as simple and unequivocal as 
the distribution of the artery, were it not that 
a diverticulum of a part of the blood returning 
from the leaflets is made, whereby a portion of it 
undergoes a second application <s>the<\s>to the atmos=
=pheric influence by being spread out in an ex=
=tensive plexus, which is distributed over the 
surface of the Bronchial mucous membrane, and 
is made to supply the Bronchial mucus, previous 
to reaching the larger trunks of the veins - 
The feature which prominently attracts attention 
when examining a lung in which the Pulmonary 
                            
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Manuscript details

Author
James Newton Heale
Reference
AP/43/4
Series
AP
Date
1860
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Physiological Anatomy of the Lungs, 1860. From The Royal Society, AP/43/4

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