These are interconnected brain cavities that produce, store, and circulate the cerebrospinal fluid.
What are ventricles?
The fourth week of development.
What is
-the neural fold fuse, neuroectodermal cells break away and migrate to sides of neural tube
-Neural crest develops into cells of the PNS (Dorsal root ganglia (spinal nerves),parts of ganglia of CN V, VII, IX, & X,Schwann Cells, Cells forming meninges)
-Neural groove folds in on itself resulting in closed neural tube which becomes the central nervous system.
The mesencephalon divides to form this.
What is nothing, the mesencephalon does not divide?!
Teratogenesis refers to this.
The 6th week.
Spinal cord begins to develop into adult-like form.
These are the directional planes of the brain.

The first skeletal structure; develops from the mesoderm.
What is the notochord?
The metencephalon and myelencephalon are divisions of this.
What is the Rhombencephalon?
This developmental abnormality results in incomplete development of midline neural structures such as fused eyes, single nasal chamber, single ventricle, reduced or absent olfactory bulbs, and corpus callosum.
What is Holoprocencephaly?
The end of the spinal cords is called this.
What is the conus medullaris?
Smooth brain developmental abnormality.
What is lissencephaly?
The rostral region of the neural tube forms this at the 4th pair of somites.
What is the Brain?
The medulla oblongata is formed from this secondary brain vesicle.
What is the myelencephalon.
These are three developmental disabilities.
What are :Intellectual Disabilities, ASD, ADHD.
Cauda equina, from Latin's "Horses tail" refers to this.
What is the spinal nerves from the areas caudal to the lumbar region which exit between vertebrae but lengthen downward at an angle.

White matter is arranged into these three bundles of fasciculi.
What are the dorsal column (ascending fibers), Lateral column—both ascending and descending, Ventral column—both ascending and descending
•(Etc., other pathways carrying information to/from cerebellum)
This germ layer becomes the nervous system,spinal cord, brain, peripheral nerves, skin, hair, nails, and tooth enamel.
What is the Ectoderm?
The cerebral cortex, basal ganglia, and limbic structures originate from this secondary brain vesicle.
What is the Telencephalon?
A developmental abnormality resulting in a small calvaria.
What is Microcephaly. (Calvaria-skill cap)
Each nerve is connected to the spinal cord by these two roots.
What are the Anterior roots (Ventral)Bundles of EFFERENT nerve fibers and Posterior roots (dorsal) contains AFFERENT fibers.
The ventral and lateral horns are this.
What is both ascending and descending fibers.
This happens around day 25 and day 27.
What is
cranial opening closes around day 25
caudal opening closes around day 27?
The three primary brain vesicles formed from the neural tube rostral to the fourth pair of somites.
What is the prosencephalon, mesencephalon, and rhombencephalon.
Bone fusion is prevented during this developmental abnormality and the brain or spinal cord may protrude through the opening. Can occur with Arnold Chiari malformation.
What is Spina Bifida or Cranium bifidum? The difference?
This can help decrease the chances of Spina Bifida or Cranium Bifidum and is regularly suggested in prenatal care.
What is of folic acid