Neural folds
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| Neural folds | ||
|---|---|---|
 | ||
| Chick embryo of thirty-three hours’ incubation, viewed from the dorsal aspect. X 30. (Neural fold labeled at center left, third from the bottom.) | ||
| Gray's | subject #7 50 | |
| Carnegie stage | 9 | |
| Precursor | neural plate | |
| Gives rise to | neural tube | |
| Dorlands/Elsevier | f_11/12371345 | |
In front of the primitive streak two longitudinal ridges, caused by a folding up of the ectoderm, make their appearance, one on either side of the middle line. These are named the neural folds; they commence some little distance behind the anterior end of the embryonic disk, where they are continuous with each other, and from there gradually extend backward, one on either side of the anterior end of the primitive streak.
Additional images
 longitudinal section through the embryo. |
 Cross section through the embryonic disc showing the fold. |
External links
- Swiss embryology (from UL, UB, and UF) hdisqueembry/triderm10
- Diagram at umich.edu
- Overview at visembryo.com
- Diagram at palaeos.com
 | This developmental biology article is a stub. You can help Wikipedia by expanding it. |
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
Prenatal development/Mammalian development of nervous system | |
|---|---|
| General neural development/ neurulation/neurula | Notochord - Neuroectoderm - Neural plate - Neural folds - Neural groove
Neural crest - Neural tube (Neuromere/Rhombomere, Cephalic flexure) Alar plate (sensory) - Basal plate (motor) Glioblast - Neuroblast |
| Eye development | Optic vesicles - Optic stalk - Optic cup - Lens placode |
| Auditory development | Auditory vesicle - Auditory pit |
| Note: mostly ecoderm, but mesoderm is precursor for epineurium, perineurium, and endoneurium | |
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
