| text |
| GrayAnatomy |
6 |
The early segmentation of the human ovum has not yet been observed, but judging from what is known t |
4 |
540 |
show |
| GrayAnatomy |
13 |
The mandibular arch lies between the first branchial groove and the stomodeum; from it are developed |
4 |
752 |
show |
| GrayAnatomy |
3 |
The ova are developed from the primitive germ cells which are imbedded in the substance of the ovari |
4 |
321 |
show |
| GrayAnatomy |
5 |
Fertilization consists in the union of the spermatozoön with the mature ovum (Fig. 8). Nothing is kn |
4 |
108 |
show |
| GrayAnatomy |
11 |
The yolk-sac (Figs. 22 and 23) is situated on the ventral aspect of the embryo; it is lined by entod |
4 |
81 |
show |
| GrayAnatomy |
12 |
In reptiles, birds, and many mammals the allantois becomes expanded into a vesicle which projects in |
4 |
1122 |
show |
| GrayAnatomy |
14 |
In the human embryo described by Peters the mesoderm outside the embryonic disk is split into two la |
4 |
228 |
show |
| GrayAnatomy |
15 |
—It is during this month that the first movements of the fetus are usually observed. The eruption of |
4 |
92 |
show |
| GrayAnatomy |
4 |
The spermatozoa or male germ cells are developed in the testes and are present in enormous numbers i |
4 |
207 |
show |
| GrayAnatomy |
7 |
In front of the primitive streak two longitudinal ridges, caused by a folding up of the ectoderm, ma |
4 |
159 |
show |
