Physiological Anatomy of the Lungs

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                                by the pulmonary veins to the left auricle of the heart. 
A drawing of this plexus is seen in series C No 5 fig a, 
and the ramusculi, which collect the blood from it, 
and pass it into the trunks of the pulmonary veins - 
are delineated in the same drawing in fig. b. 
These ramusculi are situated on the external sur=
=face of the Bronchial tubes - The plexus lining 
the mucous membrane is obviously a sort of diverti=
=culum from the main current, by which the arte=
=rialized blood is returned to the left auricle 
and is quite distinct and independent of any 
anastomosis whatever; it forms a much more 
vascular layer over the mucous membrane than 
can at all be attributed to to the Bronchial vessels, 
and it may be fairly a matter of doubt whether, 
if the whole of the Bronchial arteries were exclusively 
confined to this plexus and had no other distribution, 
they would be large enough to supply an equally vas=
=cular distribution to it - But it has been con=
=clusively shewn that the Bronchial arteries are spread 
out in a very uniform manner to every part of 
the lungs; its principal distribution being to the 
fibrous tissue of the leaflets and of the Bronchial tubes 
- Setting aside this diverticulum sent to the mu=
                            
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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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