After the exuviation of the larval integuments, and when calcification commences, the first layer of shell is deposited under, and then round these primordial valves.
It is invaluable when the patient is limited for time or means, and also for filling the first permanent molars, where we so often find poor calcification of tooth-structure.
The autopsy showed little save chronic myocarditis with brown atrophy, calcification of part of thyroid, non-united fracture of neck of left femur, moderate coronary arteriosclerosis.
Coronary sclerosis with calcification throughout, aortic and pulmonary valvular calcification hypertrophy of heart.
There may be calcification of the subintimal tissue without deposits of lime salts in the media, but this is more commonly found in the larger arteries.
It has been shown that dogs fed for a long time on putrefied meat developed inflammation and degeneration of the adventitia and media, with hyperplasia and calcification of the intima of many arteries.
Radiogram of a man aged seventy-five, showing calcification of both radial and ulnar arteries.
A further change which often takes place is calcification of the bases of the ulcers and calcification of the softened spots before rupture takes place.
Calcification of the media is found and is said to be preceded by hypertrophy of the middle coat.
In the smaller muscular arteries is seen the intimal proliferation, the stretching of the Moenckeberg type, and the calcification of the media rather than the intima.
Occasionally hyaline degeneration or calcification of the new-formed tissue is seen.
Cases have been reported of calcification of the arteries in infants and children.
It has already been said that a very marked degree of thickening, with evencalcification of the palpable arteries, may occur with absolutely no increase of blood pressure, and at autopsy a small flabby heart may be found.
When the calcification occurs in plates through the media, the well known pipe stem vessel is produced.
Calcification and Ossification in Muscles, Tendons, and Fasciæ.
The tumour is firm and elastic in consistence, but certain portions may be densely hard from calcification or ossification, while other portions may be soft and fluctuating as a result of myxomatous degeneration and liquefaction.
Calcification and Ossification in Biceps and Triceps.
On the other hand, the cartilage may undergo calcification or ossification.
Portions of a chondroma, which have undergone calcification or ossification, throw a dark shadow with the X-rays; unaltered cartilage and myxomatous tissue appear as clear areas.
Calcification of the teeth begins at the seventeenth week of foetal life.
Any deviation in calcification (except the cusps of the first permanent molars) must occur after birth.
A calcification of the outermost layer of the papilla sets in, and results in the formation of a thin layer of dentine.
The hyaline cartilage of the vertebral region forms a vertebral body in which calcification may to some extent take place.
The lowest and youngest enamel organ (e) has assumed a cap-like form enveloping a dental papilla, but no calcification has yet taken place.
I have seen a few specimens showing that when the shell has been broken it can be repaired; and this I believe is effected by the growth of a crest of corium between the broken edges, and the subsequent calcification of this crest.
Calcification seems often to fail to a certain extent in this genus: the basal cup in most specimens of A.
As for the calcification of the two valves together, we have seen, under the last variety, how little important a character it is.
Subperiosteal hemorrhage surrounding lower part of shaft of femur, with calcification of periosteum and of clot.
More often the periosteum undergoescalcification or ossification, especially near the site of the separation of the epiphysis.
Thirdly, the organic changes most frequently met with have been fatty atrophy and flabby dilatation of the heart; obstructive disease of the coronary arteries by atheroma and calcification of the orifice and arch of the aorta.
Points of calcification occur in the cartilages and tendons in very chronic cases.
In a certain, but not large, number of cases atheroma with calcification or with fatty degeneration of the arteries of the stomach has been found associated with gastric ulcer.
Defective calcification of the forming bone is one of the principal characteristics of rachitis.
The notochord is persistent and the calcification of the endoskeletal cartilage is only superficial.
The vertebrae are never ossified but endochondral calcification nearly always takes place, though it very rarely reaches the outer surface of the vertebrae.
Elasmobranchs are sometimes subdivided into three groups according to the method in which this calcification takes place: 1.
The chordal sheath is very thick and includes a well-marked zone of calcification which separates an outer zone of hyaline cartilage from an inner zone.
Even were I to find that signs of arterial calcification were present, I should still be satisfied that your vertigo is not due to this cause, but that it is a vertigo of recollection and of fear.
It occurs in his "Letters to Nervous Patients": An eminent physician for whom I have much esteem has told you that your troubles, especially your vertigo, are caused by calcification of the arteries.
With respect to this calcification, it is instructive to recall the calcification in the interior of the branchial cartilages of Limulus, as described in Chapter III.
A calcified thrombus may be intimately united to the vascular wall, the results of calcification and organization being associated.
The calcification of a thrombus takes place when the latter becomes impregnated with salts of calcium and magnesium.
Calcification and ossification of blood-vessels are frequent when the latter become dilated, as in aneurisms, whether these occur as circumscribed tumors or as a serpentine elongation and widening of the affected vessel.
A distinction is drawn between an ossification and a calcification of the blood-vessels.
This calcification of the cartilage, which may also involve the capsules of the cells, is frequently associated with an ossification, although this relation is in no way essential.
Finally, there remains the calcification of tumors of the most varied nature, the salts being present either in living or dead parts of the tumor.
The causes of calcification are therefore to be regarded as local, depending upon a destruction or weakening of the cells of a part--conditions which are directly attributable to an interference with nutrition.
The calcification of an aneurismal sac may prove beneficial in strengthening a weakened blood-vessel.
Whether or not this calcification is an intentional provision of nature to protect the body, to petrify the necrotic material and make it harmless, is not the question here, though the calcification has this effect.
The point here is that calcification of caseous glands or necrotic areas does not presuppose an excess of lime salts in the blood.
Millions of cells will be involved We'll attempt to reverse the calcification and also to develop new blood vessels that supply the heart muscle.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "calcification" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: arteriosclerosis; hardening; petrification; sclerosis; setting; solidification; tempering
