Optic stalk
| Optic stalk | |
|---|---|
 Transverse section of head of chick embryo of fifty-two hours’ incubation. | |
 Optic cup and choroidal fissure seen from below, from a human embryo of about four weeks. (Optic stalk labeled at center left.) | |
| Details | |
| Carnegie stage | 14 |
| Identifiers | |
| Latin | pedunculus opticus |
| TE | stalk_by_E5.14.3.4.2.2.6 E5.14.3.4.2.2.6 |
| Anatomical terminology | |
The optic vesicles project toward the sides of the head, and the peripheral part of each expands to form a hollow bulb, while the proximal part remains narrow and constitutes the optic stalk.[1][2]
Closure of the choroidal fissure in the optic stalk occurs during the seventh week of development. The former optic stalk is then called the optic nerve.[3] In short, the optic stalks are the structures that precede the optic nerves embryologically.
References
[edit]
This article incorporates text in the public domain from page 1001 of the 20th edition of Gray's Anatomy (1918)
- ^ Hosseini, Hadi S.; Beebe, David C.; Taber, Larry A. (2014). "Mechanical effects of the surface ectoderm on optic vesicle morphogenesis in the chick embryo". Journal of Biomechanics. 47 (16): 3837–3846. doi:10.1016/j.jbiomech.2014.10.018. PMC 4261019. PMID 25458577.
- ^ Hosseini, Hadi S.; Taber, Larry A. (2018). "How mechanical forces shape the developing eye". Progress in Biophysics and Molecular Biology. 137 (16): 25–36. doi:10.1016/j.pbiomolbio.2018.01.004. PMC 6085168. PMID 29432780.
- ^ Kaplan Qbook - USMLE Step 1 - 5th edition - page 55
External links
[edit]- eye-012—Embryo Images at University of North Carolina
- Overview at vision.ca
 | This article about the eye is a stub. You can help Wikipedia by expanding it. |