Formerly the iliac and pelvic colons were spoken of as the sigmoid flexure, but Treves and T.
In the Dipnoi, a contracted sigmoid curve between the stomach and the dilated intestine is a simple beginning of the complexity found in other groups.
The colon consists of four parts, described as the ascending colon, the transverse colon, the descending colon, and the sigmoid flexure, orsigmoid colon.
Stricture is more common in the colon, sigmoid flexure, and rectum.
Torsion of the caecum rarely takes place except in persons of from forty-five to sixty years of age, while twisting of the sigmoid flexure may happen at any period of life.
In this condition the most extensive ravages are found in the rectum and sigmoid flexure.
Diagnosis of obstruction due to stricture is frequently made by examination of the rectum and sigmoid flexure, the usual sites of constriction from this cause.
It is most often observed in the sigmoid flexure and caecum, as are the other forms of carcinoma.
In volvulus involving the sigmoid flexure, when injury to the bowel is great, the symptoms are acute in the extreme.
The most common seat is in the sigmoid flexure and descending colon.
Hypertrophy of the wall, especially of the muscular coat, coexists with dilatation, and is most common in the upper part of the rectum and sigmoid flexure.
The sigmoid flexure is usually the seat of the greatest dilatation; its expansion may be a cause or a consequence of constipation.
Some foreign bodies introduced from below find their way through the sigmoid flexure and lodge in the colon, or they may remain for a long time in the rectum.
It is usually found in the lower part of the ileum, the caecum, sigmoid flexure, and other parts of the colon.
If the accumulation occupies only a portion of the colon, as the caecum or sigmoid flexure, the distended part may become displaced and twisted on its long axis.
It represents a {842} loop of the small intestine placed around the mesenteric pedicle of the sigmoid flexure.
Usually, these strictures are within two and a half or three inches of the anus, but sometimes they have been found high up in the sigmoid flexure, and rarely at a greater distance.
The JAW JOINT, or temporo-mandibular articulation, occurs between the sigmoid cavity of the temporal bone and the condyle of the jaw.
The inferior radio-ulnar joint is formed by the disk-shaped lower end of the ulna fitting into the slightly concave sigmoid cavity of the radius.
At the lower end of the left kidney it turns inward where it terminates in the formation of the sigmoid flexure.
The rectum is the terminal part of the large intestines, and extends from the termination of the sigmoid flexure to the anus.
The sigmoid flexure, the narrowest part of the colon, is situated in the left inguinal region and communicates with the rectum.
Body frequently brown or brilliant yellow in color, somewhat sigmoid in form with tapering anterior end, the extremity of which is turned dorsally.
The transverse furrow is very oblique, and its two extremities are united by a sigmoid longitudinal furrow.
It would therefore appear that the function of the valves in the veins is the same as that of the three sigmoid valves which we find at the commencement of the aorta and pulmonary artery, viz.
There are, as everyone knows, three sigmoid or semilunar valves situated at the orifice of the pulmonary artery, which effectually prevent the blood sent into the vessel from returning into the cavity of the heart.
A point 10 millimetres (two-fifths of an inch) behind the spine of Henle corresponds to the anterior border of the sigmoid sinus.
At the operation I found a hole in the sigmoid flexure with its margins adherent to the opening in the parietes, so that the tube passed directly into the bowel.
In doing so he may suddenly meet with a gush of purulent discharge coming through an opening in the bone in the region of the tegmen tympani or sigmoid sulcus.
As far as I can judge from the scanty records relating to this complication after hysterectomy, it is the sigmoid flexure of the colon which is most commonly adherent to the cervical stump.
When the primary disease is in the cæcum, colon, or sigmoid flexure, and is operable, the growth should be resected and the cut ends of the bowel united by circular enterorrhaphy.
Sometimes, indeed, owing to the tegmen tympani or bony wall of the sigmoid sinus being already destroyed, the dura mater above or the lateral sinus posteriorly may be found already exposed within the cavity.
Each of these apes resembles man most in some one physical characteristic: the gibbons in the formation of the teeth, the orangs in the brain-structure, the gorillas in size, and the chimpanzees in the sigmoid flexure of the spine.
The disturbance and danger are enhanced when the tissues of the sigmoid flexure and the rectum are invaded by inflammation.
Disease of the anus, rectum, and sigmoid flexure results in from two-thirds to three-fourths of the feces being daily absorbed into the system.
The constriction is especially severe at the junction of the rectum with the sigmoid colon, where it flexes upon itself in the region where the bore of the rectum is less.
Thus a considerable lump may be found in the cecum or sigmoid flexure and the rest of the colon be comparatively clear of any gross accumulation.
The loading and blocking of the sigmoid flexure come from too much activity or irritability, due to inflammation, of the upper half of the rectal tube.
One of them may occupy the cecum, another the transverse colon, and possibly a third the sigmoid flexure.
The pathological changes that result in rectal impaction of feces usually extend to the sigmoid cavity.
This wise provision of Nature to moderate the steady motion of the feces as they proceed toward the sigmoid flexure or receptacle, to wait there till there is a proper stimulus for expulsion, is wofully abused by man.
The sigmoid flexure is the situation in which volvulus most commonly takes place, but it may occur in the caecum and small intestine.
The common seat of the blockage is in the colon, chiefly in the sigmoid flexure and in the rectum, but it may occur in the caecum.
This bullet crossed the cæcum, making two small type openings; but later, when it crossed the sigmoid flexure, it tore two large irregular openings in the gut.
Although this wound crossed the small intestine area, it is probable that the symptoms may have been due to an injury of the rectum orsigmoid flexure.
Lee-Metford removed from just below the lesser sigmoid cavity of the ulna, after it had perforated the elbow-joint.
The sigmoid flexure was adherent to the abdominal wall opposite the wound of exit, and a dark ecchymosed patch was found, but no perforation could be detected.
It is possible that a wound in the sigmoid flexure was present which had already closed at the time of operation.
A local incision was chosen, as the wound was presumably in the sigmoid flexure.
The patient died as a result of a double perforation of both cæcum and sigmoid flexure; none the less the bullet had crossed the small intestine area without inflicting any injury.
The eye of the crocodile may develop into a grooved sigmoid curve, or degenerate into a simple loop.
Using a cup or two of water to induce a bowel movement may eventually cause dependency, will not strengthen the colon and may after years of this practice, result in distention and enlargement of the rectum or sigmoid colon.
In fact these are the correct names given for the parts of the colon: Ascending, Descending and Transverse Colon along with the Sigmoid Colon or Rectum at the exit end.
The left limb is generally the one affected; and this circumstance may probably be explained by the pressure of the sigmoid flexure of the colon on the left iliac vein.
In imperforate anus, when the bowel terminates high, it has been proposed to cut through the abdominal parietes, and open the sigmoid flexure, so as to establish an artificial anus.
By the nature and connexions of the protruded part, as in hernia of the sigmoid flexure, or of the caput cœcum coli.
It is of especial interest because one of the antennules shows almost exactly the same sigmoid curvature which is so characteristic of the related Triarthrus.
This process is flattened laterally; its internal surface is excavated; the anterior surface, which is concave, forms a part of the great sigmoid cavity; the remainder of the cavity is formed by the radius.
These two processes are separated by the sigmoid notch.
Somewhat in front of and below the sigmoid notch is a smaller hollow (fig.
Near its proximal end the ulna is marked by a deep =sigmoid notch=, which bears on its inner side a concave surface (fig.
The =femur= is a moderately long, slender bone with a well-ossified hollow shaft slightly curved in a sigmoid manner.
The pointed proximal end of the sigmoid notch is called the =coronoid process=.
The autopsy showed the sigmoidflexure gone, and from the caput ceci to the termination the colon only measured 14 inches.
Masters has seen a child who lived nine days in whom the sigmoidflexure of the colon terminated in the fundus of the bladder.
The esophagus was on the right of the aorta, and the location of the two ends of the stomach was reversed; the sigmoid flexure was on the right side.
The serous membranes were all callous and thickened, and the canal of the sigmoidflexure was totally obliterated.
Chapman mentions a case in which the liver was displaced by dilatation of the sigmoid flexure.
It was necessary to perform abdominal section through the linea alba, divide the sigmoid flexure, and thus remove the bottle.
After suffering from invagination of the bowel and inflammation of the ovarian tissue, an ovary was discharged through an opening in the sigmoid flexure, and thence expelled from the anus.
The raphe confined within a sigmoid keel or extension of the valve; the central and terminal nodules indistinct.
Differs from Amphiprora in not having a sigmoid keel.
Such fossae are found around the duodeno-jejuneal angle, the caecum and appendix, and the sigmoid flexure.
The divisions of the human large intestine into caecum, ascending, transverse and descending colon, sigmoid flexure and rectum are found only in the primates, and here not uniformly.
In the typical arrangement of the parts the sigmoid or omega loop of the large intestine has a free mesocolon.
A second peritoneal pocket or fossa is encountered in the region of the sigmoid flexure and its mesocolon.
This angle is the site of the intersigmoid fossa, the entrance into which is seen usually as a round opening of variable size on elevating the sigmoidflexure and putting its mesocolon on the stretch.
The caudal intestinal arterial branch derived from the aorta is the inferior mesenteric artery supplying parts of the transverse colon, the descending colon, sigmoid flexure and rectum (Figs.
A small bend which appears about the middle of the third month in the left iliac fossa indicates the rudiment of the future sigmoid flexure or omega loop.
The distal straight portion of the primitive tube forms the terminal portion of the transverse colon (the splenic flexure), the descending colon, sigmoid flexure and rectum.
The formation of this fossa is closely associated with the adult disposition of the sigmoid mesocolon as part of the original primitive vertical dorsal mesentery.
C mesad) which results in the formation of a free mesocolon for the sigmoid flexure.
The impact of this feedback has been assumed to cause the point of inflection of the "sigmoid curve" and to regulate the density "at equilibrium.
Populations growing in relatively isolated or closed systems have been observed to follow a sigmoid curve toward a steady state.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sigmoid" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: crescent; falcate; horned; lunar; semicircular; sigmoid
