Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 15, 2025
I have seen a similar condition of the heart in the human foetus about the beginning of the third month, the heart then being whitish and bloodless, although its auricles contained a considerable quantity of purple blood.
Although it was once thought that the auricle was paralyzed in this condition, it probably simply loses its coordinate activity. Auricular fibrillation and auricular flutter are probably simply different degrees of the same condition, and any contractions of the auricles over 200 per minute may be termed an auricular flutter, and below that the term auricular fibrillation may be used.
"Why, you poor crathur," said his antagonist, "if I'd choose to let myself out, I could make a hare of you in no time entirely." "And an ass of yourself," retorted the other: "but you may save yourself the throuble in regard of the last, for your frinds know you to be an ass ever since they remimber you. You have them here, man alive, the auricles," and he pointed to his ears.
Many of our muscular motions were originally excited in successive trains, as the contractions of the auricles and of the ventricles of the heart; and others in combined tribes, as the various divisions of the muscles which compose the calf of the leg, which were originally irritated into synchronous action by the tædium or irksomeness of a continued posture.
These connect with each other and with the blood vessels over the body in such a manner that each aids in the general movement of the blood. *Work of Auricles and Ventricles Compared.*—In the work of the heart the two auricles contract at the same time—their contraction being followed immediately by the contraction of both ventricles.
The two auricles contract at the same time, and this is followed at once by the contraction of the two ventricles. While the ventricles are contracting, the auricles begin to relax, and after the ventricles contract they also relax.
After the contraction of the ventricles comes a period of rest, or relaxation, about equal in time to the period of contraction of both the auricles and the ventricles. On account of the work which they perform, the auricles have been called the "feed pumps" of the heart; and the ventricles, the "force pumps."
Besides, I wish such persons to observe that the grand artery and the arterial vein are of much harder and firmer texture than the venous artery and the hollow vein; and that the two last expand before entering the heart, and there form, as it were, two pouches denominated the auricles of the heart, which are composed of a substance similar to that of the heart itself; and that there is always more warmth in the heart than in any other part of the body and finally, that this heat is capable of causing any drop of blood that passes into the cavities rapidly to expand and dilate, just as all liquors do when allowed to fall drop by drop into a highly heated vessel.
Venous pulsation in the neck is generally marked, showing an impeded contraction of tile right auricle. If the auricles are heard or found by instrumental readings to contract more frequently than the ventricles, the trouble is quite likely to be a heart block from disease in the heart itself, in the bundle of His.
The two lower chambers are called ventricles, and their walls form the chief portion of the muscular substance of the organ. There are, therefore, the right and left auricles, with their thin, soft walls, and the right and left ventricles, with their thick and strong walls. The Valves of the Heart.
Word Of The Day
Others Looking