Physiological Anatomy of the Lungs

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                                with the locality where that occurs, becomes proporti=
=onately thickened and indurated, and it will be 
necessary in order to separate the true pleura from 
the morbid structure by which it is enveloped, to dissect 
away the false membrane (and it will be found quite 
possible to do this): the pleura can then be discovered 
entirely distinct and independent of the false mem=
=brane; and such blood-vessels as still remain within 
it will be found to be in connection with the pul=
=monary and not with the Bronchial systems. 
Induration 
of Pulmonary 
tissue 
When it occurs that such false membranes are 
formed, not only is the sub-jacent cellular tissue 
thickened and hypertrophied, but the parenchymatic 
structure itself also (forming the leaflets or pulmonary 
tissue) in the immediate locality is at the same time 
toughened and made to resemble parchment. 
This toughened and hypertrophied structure which 
occupies the situation which in a state of health 
belongs to the air-cells, can be injected with consi=
=derable minuteness by the Bronchial artery, but it 
will be found that this altered structure will admit of 
only a very sparing and insufficient quantity of the 
fluid sent into the Pulmonary artery, passing into 
its capillaries, although every other part of the lungs 
                            
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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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