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Aristotle - On The Parts Of Animals
Atec Февраль 16 2008 20:01:06
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. For, as was before said, every compound
of earth and water-and both nutriment and blood are such-becomes
thicker from concoction. The inability of the heat to effect
concoction may be due either to its being absolutely small in
amount, or to its being small in proportion to the quantity of food,
when this has been taken excess. This excess again may be of two
kinds, either quantitative or qualitative; for all substances are
not equally amenable to concoction.
The widest passages in the body are of all parts the most liable
to haemorrhage; so that bleeding occurs not infrequently from the
nostrils, the gums, and the fundament, occasionally also from the
mouth. Such haemorrhages are of a passive kind, and not violent as are
those from the windpipe.
The great vessel and the aorta, which above lie somewhat apart,
lower down exchange positions, and by so doing give compactness to the
body. For when they reach the point where the legs diverge, they
each split into two, and the great vessel passes from the front to the
rear, and the aorta from the rear to the front. By this they
contribute to the unity of the whole fabric. For as in plaited work
the parts hold more firmly together because of the interweaving, so
also by the interchange of position between the blood-vessels are
the anterior and posterior parts of the body more closely knit
together. A similar exchange of position occurs also in the upper part
of the body, between the vessels that have issued from the heart
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