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The blood-vessels are flexible tubes through which the blood is borne through the body. There are three kinds, the arteries, the veins, and the capillaries, and these differ from one another in various ways. The arteries are the highly elastic and extensible tubes which carry the pure, fresh blood outwards from the heart to all parts of the body. They may all be regarded as branches of the aorta.
Thus the contagious matter of the venereal disease, and of the tenia, affects the lymphatic glands, as the inquinal glands, and those about the roots of the hair and neck, where it is arrested, but does not seem to affect the blood-vessels, since no fever ensues.
The socket for the eye has a jutting ridge of bone all around it, to guard the organ of vision against injury. Grooves and canals, formed in hard bone, lodge and protect minute nerves and tiny blood-vessels. The surfaces of bones are often provided with grooves, sharp edges, and rough projections, for the origin and insertion of muscles. The Bones in Infancy and Childhood.
But if the stimulus, which inverts the stomach, be still more powerful, or more permanent, it sometimes happens, that the motions of the biliary glands, and of their excretory ducts, are at the same time inverted, and regurgitate their contained bile into the blood-vessels, as appears by the yellow colour of the skin, and of the urine; and it is probable the pancreatic secretion may suffer an inversion at the same time, though we have yet no mark by which this can be ascertained.
We looked at one another in silence, and then at the fantastic vegetation that swayed and grew visibly and noiselessly without. And ever that shrill piping continued. My blood-vessels began to throb in my ears, and the sound of Cavor's movements diminished. I noted how still everything had become, because of the thinning of the air.
The remedies are, of course, in each instance, self-evident. Swollen legs are owing to the pressure of the womb upon the blood-vessels above. Women who have had large families are more liable than others to varicose veins. If a lady marry late in life, or if she be very heavy in pregnancy carrying the child low down she is more likely to have distention of the veins.
"What does Doctor Kline think of the case?" "He agrees with me as to the character of the tumor, but thinks it larger than an orange, deeply cast among the great blood-vessels, and probably so attached to their sheaths as to make its extirpation not only difficult, but dangerous." "Will he assist you in the operation?" "Yes." Dr. Hillhouse became thoughtful and silent.
The utero-ovarian blood-vessels derive their nerves from the hypogastric plexus, which, formed by branches from both sympathetic ganglia and spinal cord, is the exclusive source of the innervation of the uterus and ovaries.
When the sun withdraws the sand ceases to flow, but in the morning the streams will start once more and branch and branch again into a myriad of others. You here see perchance how blood-vessels are formed.
This little animal contains in itself as many members and viscera as there are in a camel, such as brains, hearts, pulmonary pipes, organs of sense, motion, and generation, a stomach, intestines, and several others; and each of these organs consists of fibres, nerves, blood-vessels, muscles, tendons, membranes; and each of these of still purer parts, which escape the observation of the keenest eye."
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