File:Streeter1906 fig04.jpg: Difference between revisions
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==Fig.4. Diagram representing the growth and stages of differentiation of the human membranous labyrinth== | ==Fig.4. Diagram representing the growth and stages of differentiation of the human membranous labyrinth== | ||
{| | {| | ||
| col width="150px"|3.5 weeks (6-7 mm.) the ear vesicle consists of two simple pouches, into the upper of which opens the endolymphatic appendage. | | col width="150px" valign=top|'''3.5 weeks''' (6-7 mm.) the ear vesicle consists of two simple pouches, into the upper of which opens the endolymphatic appendage. | ||
| col width=150px| | | col width=150px|'''4 weeks''' (9 mm.) there is at the base of the vestibular pouch an atrium, the space destined to form the utricle and saccule. | ||
| col width=150px| | | col width=150px|'''5 weeks''' (12 mm.) this space is circumscribed from the cochlear pouch below by a constriction corresponding to the ductus reuniens, and above from the rest of the vestibular pouch by the formation of the semicircular canals. | ||
| col width=150px| | | col width=150px|'''6 weeks''' (20 mm.) an ingrowth of the wall of the atrium divides it into an upper part (utricle) and lower part (saccule). | ||
| col width=150px| | | col width=150px|'''10 weeks''' (30 mm.) this partition between the utricle and saccule is complete and extends inward in such a way as to split the orifice of the endolymphatic duct. | ||
|} | |} | ||
Revision as of 17:59, 23 July 2015
Fig.4. Diagram representing the growth and stages of differentiation of the human membranous labyrinth
3.5 weeks (6-7 mm.) the ear vesicle consists of two simple pouches, into the upper of which opens the endolymphatic appendage. | 4 weeks (9 mm.) there is at the base of the vestibular pouch an atrium, the space destined to form the utricle and saccule. | 5 weeks (12 mm.) this space is circumscribed from the cochlear pouch below by a constriction corresponding to the ductus reuniens, and above from the rest of the vestibular pouch by the formation of the semicircular canals. | 6 weeks (20 mm.) an ingrowth of the wall of the atrium divides it into an upper part (utricle) and lower part (saccule). | 10 weeks (30 mm.) this partition between the utricle and saccule is complete and extends inward in such a way as to split the orifice of the endolymphatic duct. |
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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History | Historic Embryology Papers) |
- Mall 1906 Links: Fig 1. 14mm Embryo | Fig 2. 30mm Embryo | Fig 3. Semicircular canal | Fig 4. Membranous Labyrinth | Fig 5. Acoustic nerve complex | Fig 6. Facial-acoustic Complex | Fig 7. Facial Nerve Pig Embryo 20 cm | Fig 8. Geniculate Ganglion | Plate 1. Human Embryo 4 to 20 mm | Plate 2. Human Embryo 30 mm | Membranous Labyrinth and Nerves
Reference
Streeter GL. On the development of the membranous labyrinth and the acoustic and facial nerves in the human embryo. (1906) Amer. J Anat. 6:139-165.
Cite this page: Hill, M.A. (2024, May 19) Embryology Streeter1906 fig04.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Streeter1906_fig04.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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- Hearing - Inner Ear Development
- Paper - On the development of the membranous labyrinth and the acoustic and facial nerves in the human embryo
- File:Streeter1906 fig01.jpg
- File:Streeter1906 fig02.jpg
- File:Streeter1906 fig03.jpg
- File:Streeter1906 fig04.jpg
- File:Streeter1906 fig05.jpg
- File:Streeter1906 fig06.jpg
- File:Streeter1906 fig07.jpg
- File:Streeter1906 fig08.jpg
- File:Streeter1906 plate01.jpg
- File:Streeter1906 plate02.jpg
- Template:Streeter1906 figures