Template:Endocrine embryo table: Difference between revisions
From Embryology
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! Organ | ! width=100px| Organ | ||
! width=100px| Stage 13 | ! width=100px| Stage 13 | ||
! width=100px| Stage 14 | ! width=100px| Stage 14 | ||
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| valign=top| [[Endocrine - Pineal Development|Pineal]] (Epiphysis) | | valign=top| [[Endocrine - Pineal Development|Pineal]] (Epiphysis) | ||
| valign=top| | | valign=top| | ||
| valign=top| slight irregularity in the surface outline of intact head corresponds to future pineal body (O'Rahilly et al. 1982). | | valign=top| slight irregularity in the surface outline of intact head corresponds to future pineal body (O'Rahilly et al. 1982). | ||
| valign=top| pineal body is detectable in roof of diencephalon (Stadium I of Turkewitsch 1933) (O'Rahilly 1968). | | valign=top| pineal body is detectable in roof of diencephalon (Stadium I of Turkewitsch 1933) (O'Rahilly 1968). | ||
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| valign=top| pineal body has reached Stadium 5 of Turkewitsch (1933).<ref name=O'Rahilly1968>{{Ref-O'Rahilly1968}}</ref> | | valign=top| pineal body has reached Stadium 5 of Turkewitsch (1933).<ref name=O'Rahilly1968>{{Ref-O'Rahilly1968}}</ref> | ||
|- | |||
| [[Endocrine - Pituitary Development|Pituitary]] (Hypophysis) | |||
| valign=top| basement membranes of craniopharyngeal pouch and brain are clearly in contact (O'Rahilly 1973). | |||
| valign=top| craniopharyngeal pouch is prominent (Streeter 1945) and notochord appears to be inserted into its dorsal wall. The craniopharyngeal pouch has become elongated and blood vessels are beginning to grow in between the basement membranes of the pouch and brain (O'Rahilly 1973a). | |||
| 15 | |||
| slight indication of the infundibular recess may be seen in some embryos (O'Rahilly 1973 a). | |||
| juxtacerebral wall of the craniopharyngeal pouch is the thicker. The lateral lobes (future infundibular, or tuberal, part) and the anterior chamber (Vorraum) are clearly visible (O'Rahilly 1973 a). The infundibular recess displays a characteristically folded wall, namely the neurohypophysis (O'Rahilly 1973 a). | |||
| 18 | |||
| caudal part of the craniopharyngeal pouch is reduced to a closed epithelial stem (Andersen et al. 1971). | |||
| the adenohypophysial epithelium adjacent to the neurohy- pophysis constitutes the beginning pars intermedia (O'Rahilly 1973 a). The walls of the craniopharyngeal pouch bud into the mesenchyme (Andersen et al. 1971 ; Jirfisek 1980). | |||
| the pharyngeal stalk becomes fragmented (Jirfisek 1980) | |||
| 22 | |||
| adenohypophysis loss of the stalk and lobules of epithelium project into the mesodermal component of the gland, and oriented epithelial follicles are present (Streeter, 1951, plate 2). Abundant angioblasts and capillaries are found. | |||
|- | |||
| [[Endocrine - Thyroid Development|Thyroid]] | |||
| 13 | |||
| 14 | |||
| 15 | |||
| 16 | |||
| 17 | |||
| 18 | |||
| 19 | |||
| 20 | |||
| 21 | |||
| 22 | |||
| 23 | |||
|- | |||
| [[Endocrine - Thyroid Development|Thyroid]] | |||
| 13 | |||
| 14 | |||
| 15 | |||
| 16 | |||
| 17 | |||
| 18 | |||
| 19 | |||
| 20 | |||
| 21 | |||
| 22 | |||
| 23 | |||
|} | |} | ||
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Revision as of 12:07, 1 November 2016
| Organ | Stage 13 | Stage 14 | Stage 15 | Stage 16 | Stage 17 | Stage 18 | Stage 19 | Stage 20 | Stage 21 | Stage 22 | Stage 23 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pineal (Epiphysis) | slight irregularity in the surface outline of intact head corresponds to future pineal body (O'Rahilly et al. 1982). | pineal body is detectable in roof of diencephalon (Stadium I of Turkewitsch 1933) (O'Rahilly 1968). | cellular migration in an external direction occurs during stages 16 and 17 (Stadium 2 of Turkewitsch 1933) (O'Rahilly 1968). | cellular migration in pineal body forms a distinct "anterior lobe" where follicles appear (Stadium 3 of Turkewitsch 1933) (O'Rahilly 1973 a). | "anterior lobe" shows a characteristic step and wedge appearance (Stadium 4 of Turkewitsch 1933) (O'Rahilly 1968). | pineal body has reached Stadium 5 of Turkewitsch (1933).[1] | |||||
| Pituitary (Hypophysis) | basement membranes of craniopharyngeal pouch and brain are clearly in contact (O'Rahilly 1973). | craniopharyngeal pouch is prominent (Streeter 1945) and notochord appears to be inserted into its dorsal wall. The craniopharyngeal pouch has become elongated and blood vessels are beginning to grow in between the basement membranes of the pouch and brain (O'Rahilly 1973a). | 15 | slight indication of the infundibular recess may be seen in some embryos (O'Rahilly 1973 a). | juxtacerebral wall of the craniopharyngeal pouch is the thicker. The lateral lobes (future infundibular, or tuberal, part) and the anterior chamber (Vorraum) are clearly visible (O'Rahilly 1973 a). The infundibular recess displays a characteristically folded wall, namely the neurohypophysis (O'Rahilly 1973 a). | 18 | caudal part of the craniopharyngeal pouch is reduced to a closed epithelial stem (Andersen et al. 1971). | the adenohypophysial epithelium adjacent to the neurohy- pophysis constitutes the beginning pars intermedia (O'Rahilly 1973 a). The walls of the craniopharyngeal pouch bud into the mesenchyme (Andersen et al. 1971 ; Jirfisek 1980). | the pharyngeal stalk becomes fragmented (Jirfisek 1980) | 22 | adenohypophysis loss of the stalk and lobules of epithelium project into the mesodermal component of the gland, and oriented epithelial follicles are present (Streeter, 1951, plate 2). Abundant angioblasts and capillaries are found. |
| Thyroid | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Thyroid | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
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- ↑ O'Rahilly R. The development of the epiphysis cerebri and the subcommissural complex in staged human embryos. (1968) Anat. Rec., 160: 488-489.
