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With a still higher power, the movements of the corpuscles through the capillaries may be studied. The wrapping, while preventing movements of the frog, must not interfere with the circulation. The central tube is a capillary. The arrows indicate the direction of slight movements in the lymph. The blood, it will be remembered, moves everywhere through the body in a system of closed tubes.
Their excretory ducts. Experiments on the mucus of the intestines, abdomen, cellular membrane, and on the humours of the eye. 3. Scurf on the head, cough, catarrh, diarrhoea, gonorrhoea. 4. Rheumatism. Gout. Leprosy. The most minute membranes are unorganized. 2. Larger membranes are composed of the ducts of the capillaries, and the mouths of the absorbents. 3.
The veins receive the blood from the capillaries and return it to the heart. The arteries and veins are similar in structure, both having the form of tubes and both having three distinct layers, or coats, in their walls. The corresponding coats in the arteries and veins are made up of similar materials, as follows: 1.
The man thrust his bull neck forward. A heavy roll of fat swelled over the collar. "You know damn well what I want. I want what's comin' to me. My share of the Dry Valley clean-up. An' I'm gonna have it. See?" "You've had every cent you'll get. I told you that before." Tiny red capillaries seamed the beefy face of the fat man. "An' I told you I was gonna have a divvy. An' I am.
In the same manner, when any one is long exposed to very cold air, a quiescence is produced of the cutaneous and pulmonary capillaries and absorbents, owing to the deficiency of their usual stimulus of heat; and this quiescence of so great a quantity of vessels affects, by irritative association, the whole absorbent and glandular system, which becomes in a greater or less degree quiescent, and a cold fit of fever is produced.
The power necessary to do this in so short a time must be considerable, and has been variously estimated by different physiologists. The muscular coats of the arterial system are then brought into action by the stimulus of distention, and propel the blood to the mouths, or through the convolutions, which precede the secretory apertures of the various glands and capillaries.
A few of the cells are white, but most of them are red, and it is their color that makes the blood look red. Your body contains about one gallon of blood. Photograph of the heart from in front with the lungs pinned aside. =The Blood Vessels.= There are four kinds of blood vessels. They are the heart, the arteries, the capillaries, and the veins. The heart lies in the chest between the lungs.
Dyspnœa, with cyanosis, a persistent cough and frothy or blood-stained sputum, a feeble pulse and low temperature, are the chief symptoms. When the fat lodges in the capillaries of the brain, the pulse becomes small, rapid, and irregular, delirium followed by coma ensues, and the condition is usually rapidly fatal. Fat is usually to be detected in the urine, even in mild cases.
In anger there is a kind of tetanic contraction of all the capillaries, causing extreme pallor, and the expulsion of an extra quantity of bile from the liver.
*Blood Supply to the Lungs.*—To accomplish the purposes of respiration, not only the air, but the blood also, must be passed into and from the lungs. The chief artery conveying blood to the lungs is the pulmonary artery. This starts at the right ventricle and by its branches conveys blood to the capillaries surrounding the alveoli in all parts of the lungs.
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