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Then, too, when the brain, the thyroid, the adrenals, the liver, or the muscles are eliminated, the power of the body to convert latent into kinetic energy is impaired or lost. I shall offer evidence tending to show that an excess of either internal or external environmental stimuli may modify one or more organs of the kinetic system, and that this modification may cause certain diseases.
Invariably the voice is higher pitched than the usual masculine tones. It may be gentle and subdued, like a genteel female's, or strident and rasping. Occasionally it is a pleasant high tenor. The Adam's apple, poetic popular name for the thyroid cartilage, is never prominent, because it is not ossified, as it should be in the normal male.
His keen calculating ability attained the peak of its curve at Austerlitz, Jena and Friedland. Thereafter, the descent begins. A rash, grandiose, speculative quality enters his projects, and divorces the elaborate coordination of means and end from his plans. That his thyroid energy capacity did not fail him is indicated by the fact that at St.
It should become possible to produce new mutations, good and bad, to speed up their production at any rate. The feeding of thyroid to a gifted father before procreation might enhance immeasurably the chances of transmission of his gift as well as of its intensification in his offspring. A field of investigation is opened that would embrace in due time the deliberate control of human evolution.
This significance is conferred upon them because it is by their activities primarily that these pressures are produced, regulated, lowered and heightened; in short, controlled. We have seen how the thyroid and adrenal hold the reins of the drive or check systems in the vegetative apparatus.
Deficiency in the thyroid secretion will always cause a heart to be slower than normal. The more marked and serious the hypothyroidism, the slower the heart is apt to be. When such a condition is diagnosed, the treatment is thyroid extract; or if the insufficiency is not great, small doses of an iodid should be given.
Take diseases of the thyroid gland as the first and shining example. The thyroid secretes a substance which substantially is an "iodized globulin," and which can be separated from the gland products.
If a small amount of thyroid secretion is evidenced by other symptoms, thyroid extract should be given. The dose need not be large, and should be small, but should be given for a considerable length of time.
In like manner, the brain may be sensitized by the administration of large doses of thyroid extract prior to operation, the threshold to injury in such a case continuing to be low to traumatic stimuli even under anesthesia. Under the sensitizing influences of thyroid extract or of Graves' disease the effect of an injury, of an operation, or of emotional excitation is heightened.
There is a series of organs in the body which has long puzzled physiologists, organs of glandular aspect, but having no ducts, the spleen, the thyroid and thymus bodies, and the suprarenal capsules.
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