United States or Antigua and Barbuda ? Vote for the TOP Country of the Week !
There are from ten to fifteen of these terminal ducts; each drains a separate group of glands, but all end in the nipple. Shortly after conception the breasts become congested; in consequence they enlarge, become tender, and begin to show swollen veins beneath the skin.
If the dog has gradually wasted away, which is often the case when purging to any considerable extent has been encouraged or produced, we have contraction of the whole canal, including even the stomach, and sometimes considerable enlargement of the mesenteric glands .
Itching of the skin over the extremities or over the whole body, it is clear, cannot be attributed to leucorrhea, but in these very rare cases the irritation would seem to be caused by some waste product which is being eliminated through the sweat glands.
With respect to the mammae of the higher animals, the most probable conjecture is that primordially the cutaneous glands over the whole surface of a marsupial sack secreted a nutritious fluid; and that these glands were improved in function through natural selection, and concentrated into a confined area, in which case they would have formed a mamma.
They have not retained any vestige of the power of revolving. It is a curious fact, that many of these filaments, when foliaceous, have on their lower surfaces, dark-coloured glands like those on the stipules, which excrete a sweet fluid; so that these rudiments have been feebly utilized. One other analogous case, though hypothetical, is worth giving.
This exudation is all the more remarkable as the surface is then cold, and hence the term, `a cold sweat'; whereas the sudorific glands are properly excited into action when the surface is heated. The hairs also on the skin stand erect, and the superficial muscles shiver. In connection with the disturbed action of the heart, the breathing is hurried.
The axillary glands receive lymph from the arm, mamma, and side of the chest, and pass it on into the lowest cervical glands and the main lymph trunk. They are frequently the seat of pyogenic, tuberculous, and cancerous infection, and their complete removal is an essential part of the operation for cancer of the breast.
#Sebaceous Cysts.# Atheromatous cysts or wens are formed in relation to the sebaceous glands and hair follicles. Sometimes they are multiple, and they may be met with in several members of the same family. They are smooth, rounded, or discoid cysts, varying in size from a split-pea to a Tangerine orange.
Others have suggested that just as the ductless glands pour into the blood chemical substances which materially affect the growth and development of other portions of the body, so similar enzymes, or other chemical substances, may be sent into the blood, which subsequently bathes the germ cells of the coming generation and produces the change. But of this, again, there is no proof.
"I suspect it is," replied the doctor; "for, though it is doubtless able to leap with great accuracy upon its prey, we saw it took some time to recharge the upper air-chamber, so that, were it not armed with poison glands, it would fall an easy victim to its more powerful and swifter contemporaries, and would soon become extinct."