Notes on the Wolffian body of higher mammals

1902 ◽  
Vol 1 (3) ◽  
pp. 245-259 ◽  
Author(s):  
John Bruce MacCallum
Keyword(s):  
Wolffian Body

scholarly journals X. On the existence of a rudimentary head-kidney in the embryo chick

1878 ◽  
Vol 27 (185-189) ◽  
pp. 443-446 ◽  
Keyword(s):  
Head Kidney ◽  
Wolffian Duct ◽  
Germinal Epithelium ◽  
Mullerian Duct ◽  
Short Account ◽  
Müllerian Duct ◽  
Front End ◽  
Wolffian Body ◽  
Embryo Chick ◽  
Shallow Groove

We have been for some time engaged in an investigation on the mode of growth of the developing Müllerian duct in the chick, and its possible derivation from the Wolffian duct; and, while carrying on our investigations on this point, were struck by some remarkable features of the abdominal opening of the Müllerian duct in its very early condition. We did not for some time pay much attention to these features, but finally devoted ourselves to their interpretation, and have been led to the conclusion that they form the rudiment of a head-kidney, “Vomiere” or “Kopfniere,” identical with that present in Amphibia, Marsipobranchii, and Teleostei. We purpose first to give a short account of our observations,, and then to proceed to state the grounds on which we have been led to compare the structures we have found with the head-kidney of the Ichthyopsida The first trace of the Müllerian duct we have met with is a very shallow groove in the germinal epithelium some little way behind the front end of the Wolffian body, and nearly overlying, though slightly external to, the Wolffian duct. This stage corresponds with the earliest stage described by Dr. Gasser. In the next stage, which follows very closely upon the first one, remarkable changes have taken place in the groove, which can best be explained by describing the appearance of a series of successive sections from before backwards through the groove and its continuation.

3. The Development of the Ova, and the Structure of the Ovary, in Man and other Mammals

1875 ◽  
Vol 8 ◽  
pp. 437-440
Author(s):  
James Foulis
Keyword(s):  
Peritoneal Cavity ◽  
Interstitial Tissue ◽  
Human Female ◽  
Stages Of Development ◽  
Early Stages ◽  
Direct Growth ◽  
Wolffian Body

After an historical introduction, in the course of which the author gave an abstract of the important observations of Pflüger and Waldeyer, he proceeded to state his own observations on the development of the ova and structure of the ovary in calves, kittens, and the human female. The following general conclusions have been arrived at by the author in the course of his investigations :—The corpuscles of the germ epithelium are derived by direct proliferation from those columnar corpuscles which invest the median side or surface of the Wolffian body, and which are continuous with the layer of columnar corpuscles that lines the pleuro-peritoneal cavity of the embryo in the early stages of development. The stroma of the ovary in the early stages of development is produced by a direct growth out from the interstitial tissue of the Wolffian body immediately beneath the germ epithelium on the median side of the Wolffian body.

scholarly journals CYSTS OF THE WOLFFIAN BODY

1924 ◽  
Vol 79 (5) ◽  
pp. 762-769 ◽  
Author(s):  
Frank Hinman ◽  
Thomas E. Gibson ◽  
Adolph A. Kutzmann
Keyword(s):  
Wolffian Body

scholarly journals The development and morphology of the gonads of the mouse. Part II.—The development of the wolffian body and ducts

1927 ◽  
Vol 102 (716) ◽  
pp. 206-221 ◽  
Keyword(s):  
Embryonic Development ◽  
Sexual Maturity ◽  
Mullerian Duct ◽  
Müllerian Duct ◽  
Wolffian Body

This paper is concerned with the embryonic development of the Wolffian body and duct, the Müllerian duct, and the urogenital connection in the mouse. Part I dealt with the development of the indifferent gonad and of the ovary after differentiation. The germinal ridge is first established in the embryo 9 days p. c , and the gonads are definitely differentiated into ovaries or testes 12 days p. c . Parturition takes place 19 days p. c . and sexual maturity is attained at about 8 weeks p. p .

scholarly journals Gonad Grafts in Embryonic Chicks and Their Relation to Sexual Differentiation

1925 ◽  
Vol 2 (2) ◽  
pp. 165-188
Author(s):  
A. W. GREENWOOD
Keyword(s):  
Sexual Differentiation ◽  
Physiological Activity ◽  
Histological Structure ◽  
Urogenital System ◽  
Microscopical Examination ◽  
Plumage Colour ◽  
Typical Structure ◽  
Opposite Sex ◽  
Wolffian Body ◽  
Embryo Chick

1. An experimental study on the effects of gonad grafts in the embryo chick was undertaken in an attempt to reproduce the results obtained by Minoura and to define the bearing of this experiment on Lillie's theory of the free-martin in cattle. 2. Eggs from a sex-linked cross were used so as to be able to identify the original sex of the embryos. 3. In the majority of cases the egg received the graft at the seventh day of incubation and was examined at the seventeenth day, at which stage the progress of sexual differentiation is almost as complete as at the time of hatching. 4. In all 540 embryos were operated on. Of this number 233 received testis grafts and 168 ovary grafts. Other tissues grafted were thyroid, adrenal, pancreas, spleen, gall-bladder, liver, Wolffian body, kidney, lung, lens, and heart. 5. The age of the grafted tissue varied from the fourteenth day of incubation up to ten weeks old. 6. Of the gonad grafts, 150 survived the operation, 71 ♂ and 79 ♀. 47 ♀ chicks were obtained after testis grafts, and 27 ♂ chicks were obtained after ovary grafts. Healthy active testis grafts were found in 20 ♀ and 5 ovary grafts in ♂. 7. The sex ratio in the surviving chicks showed no deviation from the normal. 8. Macroscopical examination of the urogenital system showed no deviation from the typical structure consonant with the sex of the chick as determined by its plumage colour. 9. Microscopical examination of the gonads revealed no abnormalities in histological structure. 10. These results lend no confirmation to the view that the process of sexual differentiation in the chick can be profoundly modified by the specific physiological activity of a gonad graft of the opposite sex. 11. Minoura's interpretation of his results are criticised. 12. The grafting of gonad tissue in the embryo chick does not reproduce experimentally the conditions existing in the bovine free-martin in that in the former the embryo is exposed to the specific action of the grafted gonad alone, whereas in the latter the female co-twin is exposed to the action of all the internal secretions from the male.

Persistent wolffian body in inguinal canal

Urology ◽  
1978 ◽  
Vol 12 (5) ◽  
pp. 592-593 ◽  
Author(s):  
Joel A. Roth ◽  
Joseph S. Ritter
Keyword(s):  
Inguinal Canal ◽  
Wolffian Body

scholarly journals III. Note sur un organe, placé dans le cordon spermatique, et dont i'existence n'a pas été signalée par les anatomistes

1859 ◽  
Vol 9 ◽  
pp. 231-232
Keyword(s):  
Small Group ◽  
Spermatic Cord ◽  
The Other ◽  
Tunica Vaginalis ◽  
Other Hand ◽  
Wolffian Body

In this paper the author gives an account of certain tubular and vesicular bodies which he has discovered in the spermatic cord, and which he considers to be the remains of the Wolffian body of the embryo. The structures in question, which he proposes to designate collectively by the term “Corps Innominé,” form a small group situated behind the tunica vaginalis, between that membrane and the spermatic vessels, and extending usually from the head of the epididymis as high as the point where the membrane is reflected forwards from the cord; sometimes, however, reaching much higher up, or, on the other hand, being more concentrated in the neighbourhood of the epididymis.

Sign in / Sign up

Export Citation Format

Share Document