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Updated: June 2, 2025
Their removal, therefore, is as important as the introduction of food and oxygen into the body. The most important of the excretory glands are *The Kidneys.*—The kidneys are two bean-shaped glands, situated in the back and upper portion of the abdominal cavity, one on each side of the spinal column. They weigh from four to six ounces each, and lie between the abdominal wall and the peritoneum.
Those above are called the broad ligaments, because of their broad and membranous figure, and are nothing else but the production of the peritoneum which growing out of the sides of the loins towards the veins come to be inserted in the sides of the bottom of the womb, to hinder the body from bearing too much on the neck, and so from suffering a precipitation as will sometimes happen when the ligaments are too much relaxed; and do also contain the testicles, and as well, safely conduct the different vessels, as the ejaculatories, to the womb.
This attachment of the placental vessels to the internal side of the uterus by their own proper efforts appears further illustrated by the many instances of extra-uterine fetuses, which have thus attached or inserted their vessels into the peritoneum; or on the viscera, exactly in the same manner as they naturally insert or attach them to the uterus.
The excretory system consists of a pair of tubes discharging through the sides of the body-wall, and having each a ciliated, funnel-shaped opening in the perivisceral cavity. These have received the name of nephridia. Through these also the eggs and spermatozoa are discharged. The reproductive organs are modified patches of the peritoneum, or lining of the perivisceral cavity.
The rectum is the last division of the large intestine It is a nearly straight tube, from six to eight inches in length, and connects with the external surface of the body. The general structure of the large intestine is similar to that of the small intestine, and, like the small intestine, it is held in place by the peritoneum.
The uterus, nearly as large as in the adult female, lay between the bladder and rectum, and was enclosed between two layers of peritoneum, to which, on either side of the uterus, were attached the testes.
The sac is completely closed, so that no communication exists between the serous cavity and the parts in its neighborhood. The various serous membranes are the pleura which envelops the lungs; the pericardium which surrounds the heart; the peritoneum which invests the viscera of the abdomen, and the arachnoid in the spinal canal and cranial cavity.
The small intestines are suspended from the back wall of the cavity by a double fold of the peritoneum, called the mesentery. The bowels are also protected from external cold by several folds of this membrane loaded with fat. This is known as the great omentum.
He describes scrotal hernia under the name enterocele, and says that it is due either to a tearing or a stretching of the peritoneum. It may be the consequence either of injury or of violent efforts made during crying. When the scrotum contains only omentum, he calls the condition epiplocele; when it also contains intestine, an epiplo-enterocele.
Hollow viscera, like the œsophagus and urinary bladder, in so far as they are not covered by peritoneum, heal less rapidly. Nerve Tissues. There is no trustworthy evidence that regeneration of the tissues of the brain or spinal cord in man ever takes place. Any loss of substance is replaced by cicatricial tissue.
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