From Embryology

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Limbus laminæ spiralis and membrana basilaris

Schematic (Testut.)


1, 1’. Upper and lower lamellæ of the lamina spiralis ossea.

2. Limbus laminæ spiralis, with a, the teeth of the first row; b, b’, the auditory teeth of the other rows; c, c’, the interdental grooves and the cells which are lodged in them.

3. Sulcus spiralis internus, with 3’, its labium vestibulare, and 3”, its labium tympanicum.

4. Foramina nervosa, giving passage to the nerves from the ganglion spirale or ganglion of Corti.

5. Vas spirale.

6. Zona arcuata, and 6’, zona pectinata of the basilar membrane, with a, its hyaline layer, B, its connective-tissue layer.

7. Arch of spiral organ, with 7’, its inner rod, and 7”, its outer rod.

8. Feet of the internal rods, from which the cells are removed.

9. Feet of the external rods.

10. Vestibular membrane, at its origin.

(Text modified from Gray's 1918 Anatomy)

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Gray H. Anatomy of the human body. (1918) Philadelphia: Lea & Febiger.

Cite this page: Hill, M.A. (2024, June 13) Embryology Gray0930.jpg. Retrieved from

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