The third to appear has a ventral convexity and is known as the pontine, since it marks the site of the future pons Varolii; it resembles the permanent flexure in the reptilian brain.
In the Reptilia the medulla has a marked flexure with a ventral convexity, and an undoubted cerebral cortex for the first time makes its appearance.
The second is the cervical, and marks the place where the brain ends and the spinal cord begins; the concavity of this flexure is ventral.
The length of the link must be so adjusted that the flexure of the bars, when they are at a temperature of 150 deg.
Here the warp is supposed to be so tightly stretched in the loom as to retain entirely the parallel state, without any curvature, and the whole flexure is therefore given to the woof.
The head, constituting one piece with the neck, will be depressed by the completeflexure of this; and the bill, being turned downwards in front of the breast, will touch the surface of the water.
It was stated that there are many lines of flexure and dislocation, running east and west, or parallel to the central axis of the Wealden.
The sigmoidflexure 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 flexureand in the rectum, but it may occur in the caecum.
The dorsal splint is usually made to extend from the olecranon to the knuckles, and the palmar one from the bend of the elbow to the flexure in the middle of the palm, a piece being cut out to avoid pressure on the ball of the thumb (Fig.
Anteriorly there is a prominence in the flexure of the wrist, and the distal fragment may be felt under the flexor tendons.
The lower end of the humerus lies in the flexure of the joint with the biceps tendon tightly stretched over it.
Note: A downward flexure in the case of folded rocks makes a synclinal axis, and the alternating upward flexure an anticlinal axis.
Self-adjusting bearing (Shafting), a bearing which is supported in such a manner that it may tip to accomodate flexure or displacement of the shaft.
Defn: The act of recurving, or the state of being recurved; a bending or flexure backward.
The final yielding and flexure occur when the resistant cross-section has been sufficiently diminished.
There can be no doubt that these manifestations of instability are the results of the local weakness and flexurewhich originated in the accumulation of energy denuded from the continents.
The flexure and sinking of the crust are undeniable realities.
If these shift when the points of support of the lens are shifted, flexure may be suspected.
The presence of flexure may be confirmed by altering the position of the points of support with respect to the eyepiece, the lens maintaining its original position.
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 was adherent to the abdominal wall opposite the wound of exit, and a dark ecchymosed patch was found, but no perforation could be detected.
That this was sometimes the case there is no doubt: thus I saw two cases in which the splenic flexure of the colon was wounded, in which the external opening was large, and a comminuted fracture of the ribs of the left side existed.
It is possible that a wound in the sigmoid flexure was present which had already closed at the time of operation.
The most common parts of the colon to become enlarged are the sigmoid flexure and the caecum (see diagram in beginning of book), but accumulations may occur in any part of the colon.
An examination of the diagram of the digestive apparatus at the beginning of the book will enable the reader to understand the difficulties attending its introduction, since it has to pass the sigmoid flexure (No.
Fistula may result from an injury; but the large majority of cases are due to a congested or diseased condition of the sigmoidflexure and rectum.
The serous membranes were all callous and thickened, and the canal of the sigmoidflexure was totally obliterated.
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.
When standing, the patient had a peculiar bowed condition of the legs, with marked flexure at the knees.
The autopsy showed the sigmoid flexure 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 sigmoid flexure of the colon terminated in the fundus of the bladder.
The ascending colon runs up from the caecum at the level of the ileo-caecal valve to the hepatic flexure beneath and behind the right lobe of the liver; it is about 8 in.
Everywhere there have been great and constant changes of level since that period, and the process of flexure and the formation of anticlinals traversing the northern districts of Afghanistan is a process which is still in action.
Here some little art Behooves us," said my leader, "that our steps Observe the varying flexure of the path.
Now the lastflexure of our way we reach'd, And to the right hand turning, other care Awaits us.
He, therefore, concludes that the form of space is that of a flexure or curve.
Above and below, toward aa and bb, the surface will turn outward with ever-increasing flexure till it becomes perpendicular to the axis and ends at the edge with one curvature infinite.
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 sigmoid flexure and putting its mesocolon on the stretch.
In the human embryo this process of adhesion begins in the eighth week, starting at the duodeno-jejunal flexure and ascending gradually toward the pylorus.
In one of these instances the colon from the tip of the caecum to the splenic flexure measured 38".
Abdominal viscera of human foetus at term, hardened in situ; hepatic flexure formed, and ascending and transverse colon differentiated.
A connection with the colon, produced by adhesion of the mesogastrium to the splenic flexure of the large intestine, forms the adult lig.
Abdominal viscera of human foetus at term, hardened in situ; hepatic flexure formed and ascending and transverse colon differentiated.
In the other case the distance from the tip of the caecum to the splenic flexurewas 27", the great omentum commencing 5" from the former point.
It will, however, be possible to trace on the right side the duodenum from the pylorus down ventrad of the right kidney until the descending portion disappears behind the hepatic flexure of the colon.
The gut from the tip of the caecum to the hepatic flexure was entirely invested by peritoneum continuous with the mesentery.
In this latter case the uncovered non-peritoneal surface of the descending duodenum is small, represented by the interval between the layers of the transverse mesocolon, and the hepatic flexure is then not directly adherent to the gut.
At the Stuttgart conference of the geodetic association in 1877, Herve Faye proposed to solve the problem of flexure by swinging two similar pendulums from the same support with equal amplitudes and in opposite phases.
This theory eliminated the flexure of the support and the curvature of the knives from the reduction of observations.
His method eliminated the need to take into account such sources of inaccuracy as flexure of the pendulum wire and imperfections in the shape of the bob.
The telescope shown is part of an interferometer used to measure flexure of the support.
Tittmann, who represented the United States, subsequently reported Peirce's prior discovery of the influence of the flexure of the pendulum itself upon the period (Report of the Superintendent of the U.
The multiple-pendulum apparatus then provided a method of determining the flexure of the stand from the action of one pendulum upon a second pendulum hung on the same stand.
Commandant Defforges, of France, also designed and used cylindrical reversible pendulums, but of different length so that the effect of flexure was eliminated in the reduction of observations.
At the calculated position of one of the points of contrary flexure all the rivets of the top boom were cut out, and by lowering the end of the girder over the side span one inch, the joint was opened 1/32 in.
Then the rivets were cut out similarly at the other point of contrary flexure and the joint opened.
If there were but little food yolk this flexure would cause the whole embryo to be bent in, so as to have the ventral surface concave, but instead of this the flexure is confined at first to the two bands which form the ventral plate.
View from the ventral surface and from the side of an embryo, after the ventral flexure has considerably advanced.
During the stages subsequent to K the ventral flexure of the notochord disappears, and its terminal part acquires by stage O a distinct dorsal curvature.
The remains of the original blastopore are present as the mouth, placed between the second pair of mesoblastic somites, and the anus placed on the concavity of the commencing flexure of the hind part of the body.
Embryo with about thirteen mesoblastic somites in which the flexure of the hind part of the body has commenced.
This change in the flexure of the embryo is in appearance a rather complicated phenomenon, and has been somewhat differently described by the two naturalists who have studied it in recent times.
The stomach is at first quite straight, but shortly after the larva is hatched its posterior end becomes bent ventralwards and forwards, so that the flexure of its posterior end (present in the adult) is very early established.
For Claparede the prime cause of the change of flexure is the translation dorsalwards of the limbs.
The valve is transversely arched, a line of flexure running from the apex to the basal margin, at about one third of the width of the valve from the tergal margin.
The fifth and sixth segments are the smallest, and mark the point of chief flexure of the body.
These springs were attached at the same points on the main frame of the aerodrome at which the wings would be attached, thus permitting a careful study of the amount of flexureand vibration which it would undergo in actual flight.
The first visceral cleft (1vc) and eye (op) are just commencing to be formed, and the cranial flexure has just appeared.
This, however, does not free it from the liability to some minute flexure in the direction of its length, from the weight of its two ends, and the mercury trough is used for the detection of such bending, should it exist.
Thus, being supported on one side only, a flexure or bending outwards of either telescope or circle, or both, might be feared.
