Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: July 20, 2025
The exaggerated afferent impulses reaching the brain as a result of trauma, inhibit the action of the nuclei in the region of the fourth ventricle and cerebellum which maintain the muscular tone, with the result that the muscular tone is diminished and there is a marked fall in the arterial blood pressure.
The right ventricle hypertrophy caused by mitral lesions has already been sufficiently discussed. The right ventricle also hypertrophies in emphysema, after repeated or prolonged asthma attacks, perhaps generally in neglected pleurisies with effusion, in certain kinds of tuberculosis, and whenever there is increased resistance in the lung tissue or in the chest cavity.
Their anatomy plainly shows us that the blood is transferred in them from the veins to the arteries in the same manner as in higher animals, viz., by the action of the heart; the way, in fact, is patent, open, manifest; there is no difficulty, no room for doubt about it; for in them the matter stands precisely as it would in man were the septum of his heart perforated or removed, or one ventricle made out of two; and this being the case, I imagine that no one will doubt as to the way by which the blood may pass from the veins into the arteries.
But the heart not ceasing to act at the same precise moment as the lungs, but surviving them and continuing to pulsate for a time, the left ventricle and arteries go on distributing their blood to the body at large and sending it into the veins; receiving none from the lungs, however, they are soon exhausted, and left, as it were, empty.
It is good against crudities, strengthening the weakness of the ventricle, or stomach, causing good appetite and digestion, and particularly for men of corpulent body, and such as are great eaters of flesh. It vanquisheth heavy dreams, easeth the frame, and strengtheneth the memory.
The little concavity between the false vocal bands above and the true vocal bands below is termed the ventricle of the larynx. It allows of more space for the free movements of the bands, especially those more important in voice-production. This is most important, because through it is explained the fact that the vocal bands may be either tensed and lengthened or relaxed and shortened.
The recent investigations of Stengel and Stanton tend to show that the increase of the heart's work during pregnancy is less considerable than has generally been supposed, and that beyond some enlargement and dilatation of the right ventricle there is not usually any hypertrophy of the heart. The total quantity of blood is raised.
Furthermore, he demonstrated that the cavities of the left side of the heart what we now call the left auricle and the left ventricle are, like the arteries, full of blood during life, and that that blood was of the scarlet kind arterialised, or as he called it "pneumatised," blood.
He believes that the important factors in the estimation of the circulatory strength are the systolic pressure, which shows the power of the left ventricle, the diastolic pressure, which shows the intravascular tension during diastole as well as the peripheral resistance, and the pulse rate, which designates the number of times the heart must contract during a minute to maintain the proper flow of blood.
During an intermittency of the pulse from a weak or intermittently acting ventricle, the diastolic pressure will reach its lowest point, and in auricular fibrillation the pressure pulse from the highest systolic to the lowest diastolic may be very great. In arteriosclerosis the systolic may be high, and the diastolic low, and hence a large pressure pulse.
Word Of The Day
Others Looking