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"It is grand to see him at work. I've seen him jab all round the aorta until it made me jumpy to watch him. This way, and mind the whitewash." They passed under an archway and down a long, stone-flagged corridor, with drab-coloured doors on either side, each marked with a number. Some of them were ajar, and the novice glanced into them with tingling nerves.
On account of its hypertrophy, the left auricle is able to send an increased amount of blood into the left ventricle, which in turn becomes hypertrophied and sends enough blood into the aorta to satisfy the requirements of the systemic circulation in spite of the leakage through the mitral valve. As long as this compensation continues, there are no symptoms.
And this is so, because in the foetus, as already said, whilst the blood is not passing through the lungs from the right to the left cavities of the heart, it flows by the foramen ovale and ductus arteriosus directly from the vena cava into the aorta, whence it is distributed to the whole body. Both ventricles have, therefore, the same office to perform, whence their equality of constitution.
While any of the large branches in the abdomen may be affected, the most common seats are in the aorta itself, just above the origin of the cœliac artery and at the bifurcation. The clinical features vary with the site of the aneurysm and with its rapidity and direction of growth. A smooth, rounded swelling, which exhibits expansile pulsation, forms, usually towards the left of the middle line.
Bonaparte, who wore his gray greatcoat, and had his whip in his hand, appeared somewhat disappointed at not seeing any one come from the valley of Aorta to inform him of the taking of the fort of Bard. I never left him for a moment during the ascent. We encountered no personal danger, and escaped with no other inconvenience than excessive fatigue.
Him followed Aristotle, who gave us the aorta, the largest blood-vessel in the human body." "Surely, sir, the Almighty gave us all that is in our bodies, and not Aristotle, nor any Grecian man," objected Gerard humbly. "Child! of course He gave us the thing; but Aristotle did more, he gave us the name of the thing. But young men will still be talking.
Another name for it is the descending thoracic aorta, and that is where grandfather's trouble is. If you knew something about automobile tires I would explain it by saying that he had a blow-out, but it's something like this. The pipe has an outer surface and an inner lining.
If such a patient with the disease advanced to this stage must overwork, or sustains any severe muscle strain, an aneurysm of the aorta may occur. In the meantime, with the advancing degeneration of the cerebral arteries, some sudden cerebral congestion, caused by leaning over, lifting, vomiting or hard coughing, may rupture a cerebral vessel, and all the symptoms of apoplexy are present.
This rapid descent greatly amused us, and we were only stopped by the mud which succeeded the snow at the distance of five or six hundred toises down the declivity. We crossed, or rather climbed up, Mont Albaredo to avoid passing under the fort of Bard, which closes the valley of Aorta.
For all states of the lungs depend on the blood from the heart and from the vena cava and aorta; and respirations, which take place in the bronchial branches, proceed in accordance with the state of those vessels; for when the flow of the blood stops, respiration stops.
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