Word Finder - uterus

definition

The womb, an organ of the female reproductive system in which the young are conceived and develop until birth.

We had to remove the uterus — but you still have your ovaries.

Segmentation takes place during its passage down the uterus.

The uterus or womb is a pear-shaped, very thick-walled, muscular bag, lying in the pelvis between the bladder and rectum.

It'll be another two weeks before I'll feel comfortable imaging her uterus to see the fetus.

A simple fibro-myomatous tumour growing in the wall of the uterus.

The upper, wide opening of the duct is attached by elastic, peritoneal lamellae to the hinder margin of the left lung; the middle portion of the duct is glandular and thick-walled, for the deposition of the albumen; it is connected by a short, constricted " isthmus " (where the shell-membrane is formed) with a dilated " uterus " in which the egg receives its calcareous shell and eventual pigmentation.

The embryo passes through three stages - (I) still enclosed within the egg and living on its own yolk; (2) free, within the vitelline mass, which is directly swallowed by the mouth; (3) there is no more vitelline mass, but the embryo is possessed of long external gills, which serve for an exchange of nutritive fluid through the maternal uterus, these gills functioning in the same way as the chorionic villi of the mammalian egg.

These unfertilized eggs develop directly, often in the uterus.

The Fallopian tubes receive the ova and carry them to the uterus.

The small opening among the fimbriae by which the tube communicates with the peritoneal cavity is known as the ostium abdominale, and from this the lumen of the tube runs from four to four and a half inches, until it opens into the cavity of the uterus by an extremely small opening.

The upper half or body of the uterus is somewhat triangular with its base upward, and has an anterior surface which is moderately flat, and a posterior convex.

This opening in a uterus which has never been pregnant is a narrow transverse slit, rarely a circular aperture, but in those uteri in which pregnancy has occurred the slit is much wider and its lips are thickened and gaping and often scarred.

On making a mesial vertical section of the uterus the cavity is seen as a mere slit which is bent about its middle to form an angle the opening of which is forward.

A normal uterus is therefore bent forward on itself, or anteflexed.

In addition to this, its long axis forms a marked angle with that of the vagina, so that the whole uterus is bent forward or anteverted.

As a rule, in adults the uterus is more or less on one side of the mesial plane of the body.

From each side of the uterus the peritoneum is reflected outward, as a two-layered sheet, to the side wall of the pelvis; this is the broad ligament, and between its layers lie several structures of importance.

The round ligament is a cord of unstriped muscle which runs from the lateral angle of its own side of the uterus forward to the internal abdominal ring, and so through the inguinal canal to the upper part of the labium majus.

Near the ovary the tubes are closed, but nearer the Fal lopian tube they open into another tube which is nearly at right angles to them, and which runs toward the uterus, though in the human subject is generally lost before reaching that organ.

Nearer the uterus than the ep08phoron a few scattered tubules are occasionally found which are looked upon as the homologue of the organ of Giraldbs in the male, and are known as the paroophoron.

The vagina is a dilatable muscular passage, lined with mucous membrane, which leads from the uterus to the external generative organs; its direction is, from the uterus, downward and forward, and its anterior and posterior walls are in contact, so that in a horizontal section it appears as a transverse slit.

Owing to the fact that the neck of the uterus enters the vagina from in front, the anterior wall of that tube is only about 21 in., while the posterior is 31.

The Uterus and Broad Ligament seen from behind (the broad ligament has been spread out).

As has been pointed out above, it is represented in the male by the fold at the opening of the uterus masculinus.

Its more pointed lower end iš attached to the uterus by the ligament of the ovary, while its anterior border has a short reflection of peritoneum, known as the mesovarium, running forward to the broad ligament of the uterus.

From this junction there proceeds an oviduct or " uterus " (paired or single) which before opening to the exterior expands to form a muscular protrusible pouch - the bursa copulatrix.

Malformations of the pelvis, accidental injuries and the diseases and displacements to which the uterus is liable, on the one hand; and, on the other, various morbid conditions of the ovum or placenta leading to the death of the foetus, are among the direct local causes.

Abortion resembles ordinary labour in its general phenomena, excepting that in the former hemorrhage often to a large extent forms one of the leading symptoms. The treatment embraces the means to be used by rest, astringents and sedatives, to prevent the occurrence when it merely threatens; or when, on the contrary, it is inevitable, to accomplish as speedily as possible the complete removal of the entire contents of the uterus.

In some it is very marked, for example in some viscera, the spleen, the bladder, the ureter, the uterus, the intestine, and especially in the heart.

The young (which, as in other marsupials, leave the uterus in an extremely small and imperfect condition) are placed in the pouch as soon as they are born; and to this they resort temporarily for shelter for some time after they are able to run, jump and feed upon the herbage which forms the nourishment of the parent.

The paired ovaries discharge their products into a median coelemic chamber with lateral branches (C), often called the uterus, from which the ripe ova are discharged by a median dorsal pore into the terminal region of the rectum (cloaca).

In some of the lower vertebrates quinine reduces the activity of the spinal cord, but in the human species it appears to stimulate the nervous mechanism of the uterus under certain conditions, and it is therefore included under the class of oxytocic or ecbolic drugs.

The important actions of ergot are on the blood-vessels and the uterus.

Ergot is the most powerful known stimulant of the pregnant uterus.

At least four of its constituents act directly on the muscular fibre of the uterus, whilst the cornutine acts through the nerves.

Of great practical importance is the fact that the cornutine causes rhythmic contractions such as naturally occur, whilst the sphacelinic acid produces a tonic contraction of the uterus, which is unnatural and highly inimical to the life of the foetus.

Perhaps the most valuable of all the medicinal applications of turpentine, and one which is rarely, if ever, mentioned in therapeutic textbooks - owing to the fact that gynaecology has been so extremely specialized - is in inoperable cancer of the uterus.

In other species which possess receptacula seminis it is probable that fertilization is effected once only in early life before any ova pass into the uterus.

The Australasian species come nearest to laying eggs, inasmuch as the eggs are large, full of yolk, and enclosed in a shell; but development normally takes place in the uterus, though abnormally, incompletely developed eggs are extruded.

The uterus always contains several young, which are usually at different stages of development and are born at different times of the year.

In most of the African species, however, the embryos of the uterus are almost of the same age and are born at a definite season.

Each oviduct, after a short course, becomes dilated into the uterus.

Spermatozoa are not found in the uterus and oviducts, and it appears probable, as we have said, that they reach the ovary directly by boring through the skin and traversing the body cavity.

The embryos in the uterus are all nearly of the same age, except for a month or two before birth, when two broods overlap.

The uterus appears to contain embryos of different ages.

Embryos in the uterus of very different ages, and probably born all the year round.

Ova large, with much yolk and thick membrane, like those of Australasian species; embryos with slit-like blastopore and of very different ages in the same uterus, probably born all the year round.

They also increase the number of leucocytes in the blood, and the more irritating of them increase the flow of blood to the pelvic organs, and may thus stimulate the uterus, or in large doses cause abortion.

She had blamed him at first for giving them permission to remove her uterus, but it was a life and death decision - one that wasn't easy for him.

We had to remove the uterus — but you still have your ovaries.