As embryonic tissue continues to fold, the two endocardial tubes are pushed into the thoracic cavity, begin to fuse together, and complete the fusing process at approximately 22 days.

From here it continues up the abdomen, then across the width of the abdominal cavity, and then it turns down, continuing to its endpoint at the anus.

As the lesion continues to demineralize, it can turn brown but will eventually turn into a cavitation (" cavity ").

If demineralization continues over time, enough mineral content may be lost so that the soft organic material left behind disintegrates, forming a cavity or hole.

The GIT begins at the mouth or oral cavity and continues until its termination, which is the anus.

The process continues until she has filled the cavity.

Plaque is a haven for oral micro-organisms and continues to build up in the oral cavity until it can mineralize in to calculus ( also known as tartar ) or cause plaque associated gum disease.

A blastocoele is a small cavity on the center of the embryo, and the developing embryonary cells will grow around it.

Leiomyomata ( fibroids ) can slowly grow and start causing endometrial bleeding that disrupts implantation sites or distorts the endometrial cavity which affects carrying a pregnancy in the very early stages.

These vertical, expandable prosthetic titanium ribs provide the benefit of expanding the thoracic cavity and straightening the spine in all three dimensions while allowing it to grow.

Bumblebees do not often preserve their nests through the winter, though some tropical species live in their nests for several years ( and their colonies can grow quite large, depending on the size of the nest cavity ).

Large ones grow, mainly outward, from the bowel wall until the point where they outstrip their blood supply and necrose ( die ) on the inside, forming a cavity that may eventually come to communicate with the bowel lumen.

As the tumor grows it may project outside the bowel ( exophytic growth ) and / or inside the bowel ( intraluminal growth ), but they most commonly grow exophytically such that the bulk of the tumor projects into the abdominal cavity.

If the cavity is unstable, the beam size will grow without limit, eventually growing larger than the size of the cavity mirrors and being lost.

Patients are often young and healthy as the tumors grow and spread uninhibited within the abdominal cavity.

In technical terms, The Fistula in Ano, without any regard to the strict definition of the word, is understood to be an Abscess, running upon, or into the Intestinum Rectum ; though an abscess in this part, when once ruptured, does generally, if neglected, grow callous in its cavity and edges, and become at last, what is properly called a Fistula ; this condition is now diagnosed as a sacrococcygeal fistula, more commonly known as a pilonidal cyst ( This developed due to long amounts of time sitting on a horse.

In captivity, hagfish are observed to use the overhand-knot behavior " in reverse " ( tail-to-head ) to assist them in gaining mechanical advantage to pull out hunks of flesh from carrion fish or cetaceans, eventually making an opening to permit entry to the interior of the body cavity of larger carcasses.

These species then brood the young inside their mantle cavity, eventually releasing them into the water column as veliger larvae or as crawl-away juveniles.

Lastly, both parasympathetic and sympathetic nervous stimulation can lead to myoepitheilium contraction which causes the expulsion of secretions from the secretory acinus into the ducts and eventually to the oral cavity.

This shunt is usually inserted in between two of the vertebrae in the lumbar and punctures the cerebrospinal fluid sack or lumbar subarachnoid space, it then runs beneath the skin to the peritoneal cavity, where it is eventually drained away by the normal bodily fluid drainage system.

Plaque that remains in the oral cavity long enough will eventually calcify and become calculus.

This blood-filled cavity will eventually either thrombose ( clot ) enough to seal the leak or rupture out of the tougher tissue enclosing it and flow freely between layers of other tissues or into looser tissues.

Soon, the oocyst ruptures, releasing hundreds of sporozoites into the mosquito body cavity, where they eventually migrate to the mosquito salivary glands.

The fungus invades the body of the caterpillars, filling its entire body cavity with mycelia and eventually killing and mummifying it.

If the tumor outstrips its blood supply, it can necrose internally, creating a central fluid-filled cavity with hemorrhage and cavitations that can eventually ulcerate and communicate into the lumen of the bowel.

Pulmonary hypertension eventually causes right ventricular heart failure, the symptoms of which are peripheral edema ( fluid accumulation in the skin of the legs ) and ascites ( fluid accumulation in the abdominal cavity ).

This corrosion is caused from the bacteria that are present on the teeth which break down the sugars in refined foods and then excrete them in the form of acids, which then eat away at the protective enamel of the tooth, causing a cavity, infection and eventually toothache.

The welded pipe versions had several adverse effects, such as vibration, pipe weld separation or breakage while in flight, and wind drag, due to impossibility of aligning the pipes correctly with the nose of the weapon, so that phase of development eventually gave way to threaded steel water pipes screwed into the nose cavity of the bombs, leaving only the tail fuse for detonation.

The oocyst then burst and sporozoites are released into the body cavity of mosquito from where they eventually reach the salivary glands of mosquito through blood.

Laser science is principally concerned with quantum electronics, laser construction, optical cavity design, the physics of producing a population inversion in laser media, and the temporal evolution of the light field in the laser.

This phenomenon is caused by the resonant cavity of the shell producing a form of pink noise from the surrounding background ambiance.

The contents of the abdominal cavity may protrude into the inguinal canal, producing an indirect inguinal hernia.

Since 1998, many high-end US-made Fender Stratocasters such as the American Deluxe, American, Hot Rodded American, American Special and American Standard series came with an HSH pickup rout instead of a " swimming pool " ( or " bath tub ") cavity to increase the total amount of wood that actually can resonate, producing a more complex tone.

Light confined in the cavity reflect multiple times producing standing waves for certain resonance frequencies.

Practical laser resonators may contain more than two mirrors ; three-and four-mirror arrangements are common, producing a " folded cavity ".

Hill died in 1931 from natural causes, diagnosed as " an abscess of the lesser peritoneal cavity which had ruptured into the stomach, producing ' fatal terminal hemorrhages '.

The thoracic cavity expands and air rushes into the lungs due to the negative pressure, producing inspiration.

During cold, dry seasons, the mucus lining nasal passages tends to dry out, meaning that mucous membranes must work harder, producing more mucus to keep the cavity lined.

Conversely, when the internal obliques contract they compress the organs of the abdomen, pushing them up into the diaphragm which intrudes back into the chest cavity reducing the volume of the air filled lungs, producing an exhalation.

Ejecta thrown out of the crater do not include material excavated from the full depth of the transient cavity ; typically the depth of maximum excavation is only about a third of the total depth.

Some of this impact melt rock may be ejected, but most of it remains within the transient crater, initially forming a layer of impact melt coating the interior of the transient cavity.

In small craters, less than about 4 km diameter on Earth, there is some limited collapse of the crater rim coupled with debris sliding down the crater walls and drainage of impact melts into the deeper cavity.

In simple craters, the original excavation cavity is overlain by a lens of collapse breccia, ejecta and melt rock, and a portion of the central crater floor may sometimes be flat.

Above a certain threshold size, which varies with planetary gravity, the collapse and modification of the transient cavity is much more extensive, and the resulting structure is called a complex crater.

Because considerable erosion has occurred since the Sudbury event, an estimated in the North Range, it is difficult to directly constrain the actual size of the Sudbury crater, whether it being the diameter of the original transient cavity, or the final rim diameter.

* A 30-40 m diameter crater, formed on 1 November 2010 by the collapse of a natural cavity