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Plate 4. Four drawings of a model of the eye, eye-muscle primordia, and associated nerves

Embryo No. 6258, horizon xvii.

Fig. 16. Dorsocranial aspect of the same model illustrated in figure 15. X30.

Attention is called to the four peripheral condensations, about the outer margin of the optic vesicle, into which the primordia of the four rectus muscles have grown. Cranial nerves III, IV, and VI have reached their respective eye-muscle primordia: the primordium of the inferior oblique has appeared as a conspicuous condensation at the distal end of the inferior rectus; a prominent bend (at the point where the trochlea will subsequently develop) has appeared near the distal end of the superior oblique primordium, and the proximal end of the superior oblique has begun to shift medially.


Stage 17 Links: Week 6 | System Development | Head | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Carnegie Embryos | Madrid Embryos | Category:Carnegie Stage 17 | Next Stage 18
  Historic Papers: 1926 Precervical Sinus | 1948 stage 15-18


Week: 1 2 3 4 5 6 7 8
Carnegie stage: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23


Links: Plate 4 | Fig. 14 | Fig. 15 | Fig. 16 | Fig. 17 | stage 17

Reference

Gilbert PW. The origin and development of the human extrinsic ocular muscles. (1957) Carnegie Instn. Wash. Publ. 611, Contrib. Embryol., Carnegie Inst. Wash. 36: 59-78.


Cite this page: Hill, M.A. (2020, November 30) Embryology Gilbert1957 fig16.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Gilbert1957_fig16.jpg

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© Dr Mark Hill 2020, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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current01:02, 2 June 2016Thumbnail for version as of 01:02, 2 June 2016773 × 947 (111 KB)Z8600021 (talk | contribs)==Plate 4. Four drawings of a model of the eye, eye-muscle primordia, and associated nerves,== Embryo No. 6258, horizon xvii. Fig. 14. The eye-muscle primordia of embryo no. 6258 are superimposed on the brain of another embryo, no. 6520, of approxima...