is corrugated, in order to complete that branch
of the subject which relates to the general structure of the lungs -
The Rugae.
These rugae mark out the direction of
certain longitudinal fibres, which are placed
immediately beneath the mucous membrane
The rugae are obviously caused by the con=
=tractile property of the circular fibres, which
embrace and surround the longitudinal ones.
Longitudinal
and circular fibres
The rugae are only visible when the
diameters of the Bronchial tubes have
been diminished by the contraction of the
circular fibres. When the whole lung has
been kept distended for some days, by pumping
salt and water or some other viscid liquid
into the Bronchial tubes, the tendency of
these tubes to contract in their diameters
will be overcome, and the mucous surface
will then present a smooth appearance free
from any rugae.
Fibrous
capsules
The contractile fibres, both longitudinal
and circular, are continuous with the fibrous
tissue, which has already been described
as an expansion of the outer coat of the
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Manuscript details
- Author
- James Newton Heale
- Reference
- AP/43/4
- Series
- AP
- Date
- 1860
- IIIF
-
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Cite as
Physiological Anatomy of the Lungs, 1860. From The Royal Society, AP/43/4
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