Template:Seminal Vesicle Timeline table: Difference between revisions
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|+ '''Seminal Vesicle Timeline''' | |+ '''Seminal Vesicle Timeline''' | ||
|-bgcolor="CEDFF2" | |-bgcolor="CEDFF2" | ||
! width= | ! width=80px|Week | ||
! width=100px|Fetal CRL mm | |||
! Event | ! Event | ||
|- | |- | ||
| 13 | | 13 | ||
| seminal vesicles appear as lateral evaginations or out-pocketings from the lower portion of the mesonephric ducts (Wolffian ducts). At this stage their lateral diameter is always greater than the anteroposterior length. | | 80 | ||
| seminal vesicles appear as lateral evaginations or out-pocketings from the lower portion of the mesonephric ducts (Wolffian ducts). At this stage their lateral diameter is always greater than the anteroposterior length. | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| 14 | | 14 | ||
| sacculations or diverticula of the vesicles as evaginations of the walls of the vesicles. At this time | | 100 | ||
| sacculations or diverticula of the vesicles as evaginations of the walls of the vesicles. At this time 3 small but distinct sacculations may be counted at a given level in each vesicle. | |||
|- | |- | ||
| 19 | | 19 | ||
| dilatation of the mesonephric ducts in their lower portion, to form the ampullae of the deferent ducts. | | 170 | ||
| dilatation of the mesonephric ducts in their lower portion, to form the ampullae of the deferent ducts. Sacculations of the ampullae in the form of slight but definite irregularities of their lumina. Each vesicle at this stage shows from 3 to 8 distinct sacculations at a given level. The lateral and antero—posterior diameters are now about equal. | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| 21 | | 21 | ||
| sacculations of the mesonephric ducts have become well developed and the dilatation of the ducts to form the ampullae have assumed very nearly their proportions at birth. | | 180 | ||
| sacculations of the mesonephric ducts have become well developed and the dilatation of the ducts to form the ampullae have assumed very nearly their proportions at birth. | |||
|- | |- | ||
| 25 | | 25 | ||
| vesicles and ampullae have assumed practically their adult form as regards their general topography and arrangement of sacculations. At a single level may be counted from~nine to twelve separate diverticula. | | 220 | ||
| vesicles and ampullae have assumed practically their adult form as regards their general topography and arrangement of sacculations. At a single level may be counted from~nine to twelve separate diverticula. | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| 25 to 31 | | 25 to 31 | ||
| prostatic utricle opens into the posterior urethra. At the latter date has a bifid lumen showing the union of two partially fused tubes. At this stage 5 to 7 distinct sacculations in each vesicle at a given level. | | 220 to 275 | ||
| prostatic utricle opens into the posterior urethra. At the latter date has a bifid lumen showing the union of two partially fused tubes. At this stage 5 to 7 distinct sacculations in each vesicle at a given level. | |||
|- | |- | ||
| Birth | | Birth | ||
| | |||
| vesicles show at a given level 7 distinct sacculations at one time. At this stage many of the diverticula are traversed by a network of fine trabeculae. | | vesicles show at a given level 7 distinct sacculations at one time. At this stage many of the diverticula are traversed by a network of fine trabeculae. | ||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| | |||
| colspan=2|Data<ref name=Watson1918>{{Ref-Watson1918}}</ref> Links: {{Seminal vesicle}} | {{timeline}} | | colspan=2|Data<ref name=Watson1918>{{Ref-Watson1918}}</ref> Links: {{Seminal vesicle}} | {{timeline}} | ||
|}<noinclude>[[Category:Template]][[Category:Table]][[Category:Timeline]][[Category:Seminal Vesicle]][[Category:Male]]</noinclude> | |}<noinclude>[[Category:Template]][[Category:Table]][[Category:Timeline]][[Category:Seminal Vesicle]][[Category:Male]][[Category:Fetal]]</noinclude> | ||
Latest revision as of 22:19, 4 June 2018
| Week | Fetal CRL mm | Event |
|---|---|---|
| 13 | 80 | seminal vesicles appear as lateral evaginations or out-pocketings from the lower portion of the mesonephric ducts (Wolffian ducts). At this stage their lateral diameter is always greater than the anteroposterior length. |
| 14 | 100 | sacculations or diverticula of the vesicles as evaginations of the walls of the vesicles. At this time 3 small but distinct sacculations may be counted at a given level in each vesicle. |
| 19 | 170 | dilatation of the mesonephric ducts in their lower portion, to form the ampullae of the deferent ducts. Sacculations of the ampullae in the form of slight but definite irregularities of their lumina. Each vesicle at this stage shows from 3 to 8 distinct sacculations at a given level. The lateral and antero—posterior diameters are now about equal. |
| 21 | 180 | sacculations of the mesonephric ducts have become well developed and the dilatation of the ducts to form the ampullae have assumed very nearly their proportions at birth. |
| 25 | 220 | vesicles and ampullae have assumed practically their adult form as regards their general topography and arrangement of sacculations. At a single level may be counted from~nine to twelve separate diverticula. |
| 25 to 31 | 220 to 275 | prostatic utricle opens into the posterior urethra. At the latter date has a bifid lumen showing the union of two partially fused tubes. At this stage 5 to 7 distinct sacculations in each vesicle at a given level. |
| Birth | vesicles show at a given level 7 distinct sacculations at one time. At this stage many of the diverticula are traversed by a network of fine trabeculae. | |
| Data[1] Links: seminal vesicle | timeline | ||
- ↑ Watson EM. The development of the seminal vesicles in man. (1918) Amer. J Anat. 24(4): 395 - 439.
