Physiological Anatomy of the Lungs

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                                and have been already eplained - 

Distribution of 
the Pulmonary vessels 
To proceed in the next place with the 
consideration of the distribution of the Pulmonary vessels. 
It will be found that nothing can be easier than to 
trace out the course and Ramifications of the 
Pulmonary arterys and veins when a pair of 
lungs, injected in the manner above described, 
with the arteries of one colour and the veins of 
another is examined - The mode of distribution 
of each is marked, decisive and invariable. 
The Pulmo=
=nary artery 
The Pulmonary artery is seen always accom=
=panying the Bronchial tube, dividing as it 
divides and maintaining an exact correspon=
=dence with its subdivisions, down to the point 
at which the terminal Bronchial tubes give off their 
pedicels - In some works it is asserted that 
as they diminish in size the <s>Bronchial<\s> pulmonary arteries 
become more numerous than the Bronchial tubes; 
this is not the case: whenever there is a Bronchial 
tube there is also one corresponding Pulmonary 
artery and never more than one - Throughout 
the lung the Pulmonary artery always runs on 
the upper surface of the Bronchial tube, and 
                            
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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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