At the fifth month of foetal life, the testicle, 3, is situated in the loins beneath the kidney, 2.
This completes the stages of metamorphosis, and changes the course of the simple foetal circulation to one of a more complex order--viz.
The general lining membrane of the foetal abdomen is composed of two layers--an outer one of fibrous, and an inner one of serous structure.
The umbilicus is a cicatrix formed after the metamorphosis of a median foetal structure--the placental cord, &c.
In early foetal life, the left lobe of the liver touches the spleen on the left side; but in the process of abdominal development, the two organs become separated from each other right and left.
The foetal abdomen and scrotum form one general cavity, and are composed of parts which are structurally identical.
In the centre of the interauricular septum of the human heart, an aperture (foramen ovale) is left as being necessary to the foetal circulation.
Achondroplastic nanism is associated with a pathological deformity due to foetal rickets.
Illustration: fertilized ovum embryo foetus and new-born child child] From the little black point to the big circle are represented the different stages of embryonal and foetal development, until we reach the child.
This calls to mind the foetal form of the new-born child, and the resulting type, because of this morphological coincidence, is classed among the infantile types.
Little's disease, which is a form of paralysis of foetal origin, and all the teratological (i.
Upon her rests not only the responsibility of preserving the integrity of the germ, but also that of the embryonal and foetaldevelopment of man.
The polycotyledonary forms of placenta are due to similar concentrations of the foetalvilli of an originally diffused placenta.
The zonary placenta of Orycteropus is capable of being easily derived from that of Manis by the disappearance of the foetal villi at the two poles of the ovum.
From such a primitive type of foetal membranes divergencies in various directions have given rise to the types of foetal membranes found at the present day.
On the former hypothesis, for example, the teeth of the foetal Balæna have a meaning; on the latter, none.
Surely the stripes of dun horses, and the teeth of the foetal Balæna, are not explained by the "existence of general laws of Nature.
Hegar has described an interesting case showing an association, of foetal origin, between sexual anomaly and abnormal hairness.
When, however, it is thus a degenerative character of sexual nature, having its origin in some abnormal foetal condition or later atrophy of the ovaries, it is no necessary indication of any aptitude for detumescence.
A like process takes place during parturition when the same parts are being lubricated and stretched in preparation for the protrusion of the foetal head.
As an instance may be mentioned the presence in whale-bone whales of imperfectly formed teeth, which are absorbed comparatively early in foetal life (Julin, Arch.
The brain, judging of course from casts, has those sulci "which are common to the whole series of Ungulates, and closely resemble those of a foetal Sheep.
That the Whalebone Whales possess teeth while in the foetalcondition was discovered so long ago as 1807.
It must be borne in mind, too, that the kidneys offoetal Man are lobulated.
Not only is there one set of teeth developed in the foetal Balaenoptera but two, of which one comes to a greater maturity; the other, in fact, remaining at a very early stage of development.
It has been stated, however, that the foetal Sheep has traces of those rudiments.
In the Narwhal, whose dentition in the adult is reduced to the well-known tusk or tusks (properly developed only in the male), there is a complete foetal dentition.
Their direct ancestors, the amphibia, and the fishes are devoid of these foetal membranes; they would have been superfluous to these inhabitants of the water.
On the other hand, the foetal placenta is formed by innumerable branching tufts or villi, which grow out of the outer surface of the allantois, and derive their blood from the umbilical vessels.
The placenta consists of two very different parts, the foetal and the maternal part.
In the pelvis the acetabula are imperforate; and well-developed epipubic bones are never found in the adult, though traces of them occur in some Carnivores and foetal Ungulates.
Teeth are always present at some period of the life history, but in the whalebone whales they are only present during foetal life, their place in the adult animal being taken by horny plates of baleen.
Calcified teeth representing the milk dentition occur in the foetus, but the teeth are never functional, and always disappear before the close of foetal life.
If the ear be placed on the abdomen, over the womb, the beating of the foetal heart can sometimes be heard quite plainly, and by the use of an instrument called the stethoscope, the sounds can be still more plainly heard.
Every stage of its foetal development is watched with feeling of settled repugnance.
Later, in the foetal life, at birth, and through infancy though the organs of sex serve to distinguish the male from the female, there is in the general structure and working of the organism little or nothing to divide the sexes.
Those with whalebone have rudimentary teeth in both jaws in the foetal state.
In the heart the foetal arrangements had wholly disappeared.
The request contained in my letter to Mr. Goodsir was, to examine for me the skeleton of a foetal Mysticetus now in the University Museum.
If the embryo of one of the mammalia pass through the foetal stages of the fish and the bird, the embryo fish bears the same transitory resemblance to the foetal condition of the bird or the mammal.
Animals are only the persistentfoetal stages or conditions of man.
Did the former animals remain in the condition of ova, from want of a perfect vascular system; they are next developed, so soon as vessels appear and form a vascular plexus, into foetal involucra or envelopes.
The foetal water in the amnion is derived from albumen in the ovum; it is here secreted by the oviduct, but in the Mammalia by the internal wall of the uterus, and absorbed by the general envelopes.
The foetal water is absorbed by the embryo through the integument.
Towards the termination of pregnancy, when the foetus is endowed with muscular motion, the foetal water is also absorbed.
The foetal water corresponds to the albumen or the white of eggs, not to the vitellus.
The heart of Reptiles is therefore a persistent foetal heart.
Viewed as a whole they resemble in form, appendages, and substance the foetal involucra or envelopes.
Fungia, resembles a vitellus just hatched, and from which thefoetal envelopes have been developed.
It is only the vegetative systems which take root in the foetal envelopes, but not the animal systems.
Malformations are only persistent foetal conditions, or animal formations in individual animal bodies.
A young monkey is no more likely to be transmuted into a man than an old one; nor is such a metamorphosis at all more probable in the course of its foetal life.
The uterine souffle is synchronous with the maternal pulse; the foetal heart is not, being about 120 beats per minute.
We have not the space to describe minutely, or at length, the formation and growth of the foetal structures, and trace them separately from their origin to their completion at the birth of the child.
The foetal blood is transmitted to and fro between the body of the child and the placenta, by a cord which contains two arteries and one vein.
This constancy is unaccountable, and more mysterious than the occasional malformation of germs in the early period of foetal life.
If the union were vascular, the mother's blood would circulate in the foetal body, and the impulses of the maternal heart might prove too strong for the delicate organism of the embryo.
The differences of sexes is the result of foetal progress only one degree less marked than that of a change of species.
For proof that species do change, and that even new species have been actually and recently produced, the author has adduced statements certainly as questionable and little satisfactory as his representation of foetal phenomena.
His first foetal form is that which is permanent in the animalcule; it next passes through ulterior stages, resembling successively a fish, a reptile, a bird, and the lower mammalia before it attains its specific maturity.
It is not true that one passes through the form of a lower group, though no doubt fish more nearly related to foetal state{158}.
It may have been effected during early age of free life foetal existence, as monsters show.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "foetal" in a variety of sentences. We hope that you will now be able to make sentences using this word.
