Spinal CNS and Related Structures (23%) Flashcards
What does the ectoderm give rise to
Notochord
Ectoderm
Neural Plate
The vertebra column is formed from
Sclerotome (mesoderm) (somite cells)
What does the notochord do
Induces ectoderm to form neuroectoderm
What does the ectoderm do
Forms neural plate
What does the neural plate do
forms neural groove which houses the spinal cord and brain vesiciles
What does the neural plate develop into
Macrogilal cells Oligodendrocytes Astrocytes Neurons Ependymal Cells Retinal Cells
What does the Ectoderm develop into
Foregut
Midgut
Hindgut
Allantosis
What does the foramen Ovale become
Fossa Ovalis (between interartrial spetum)
What does the ductus Arteriosus become
Ligamentum Areteriosum
What does the ductus Venosus become
Ligamnetum Venosum
What does the umbilical vein become
Ligamentum teres
What does the umbilical arteries become
Medial umbilical ligaments
What does the urachus become
Duct of Allantosis
What are Glioblast
Like “glue”
Gives rise to astrocytes and oligodendrosytes
What is the most numerous cell of the CNS
Astrocyte
What cell is numerous in the CNS and forms MYELIN aroound CNS
Oligodenocytes
What does the ependymal cell do
Line CNS
Ciliated, makes leaky barrier between CSF and CNS
What is another name for Microglia cells
Gitterzellen
What is the function for microglia
Macrophage
what is the function of Neuroblast
Makes neurons
What are the two macroglia
Astrocytes (BBB; active transport for glucose and filters)
Oligodendrocytes: Myelin
The circle of willis goes anatomically around
Piturotary gland
Optic Chiasm
Which two arteries supply the circle
Verterbal A
Internal Carotid a
What areteries make the circle
Anterior and Posterio Cerebral
Anterior and Posterior Communicating
