Physiological Anatomy of the Lungs

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                                these small capillaries derived from the Bronchial 
arteries, evidently answer this purpose, while 
the much more vascular plexus connected 
with the pulmonary vessels is wholly and 
exclusively devoted to <s>the<\s> a respiratory <s>process<\s> purpose 
in which the secretion of bronchial mucus is 
included, and the two sets of vessels are as 
distinct in their ramifications as they are 
in their functions - 
A drawing in Series B No1 shews the larger 
Bronchial arteries of their natural size, running 
on the external surface of the Bronchial tubes - 
and the drawing in Series B No2. fig a shews 
the appearance which the interior of the Bron=
=chial tubes presents when the Bronchial artery 
has been fully injected and that in fig. b is a more highly magnified 
representation of the same 
 - The majority of the 
vessels shewn in this drawing consist of those 
which ramify in the fibro-cartilaginous mem=
=brane, and are seen through the transparent 
mucous membrane; some very fine vessels 
extend however into the tissue of the membrane, 
evidently for the purpose of what is ordinarily, 
though erroneously called its 'nutrition'. 
A drawing which has already been alluded to, 

                            
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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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