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UKCD Nervous Sys Dev

learning objectives for the nervous system devleopment

QuestionAnswer
List the three stages of neural tube formation. Neural plate, neural groove, neural tube
What structure is responsible for the induction of neurulation? The notochord
List the derivatives of neural crest in the nervous system. Ectomesenchyme; spinal, sympathetic and parasympathetic ganglia; Schwann cells; pigment cells
Define neurulation. Formation of the neural tube and eventual formation of the central nervous system
List the three initial swellings of the neural tube. Prosencephalon (forebrain), mesencephalon (midbrain), and rhombencephalon (hindbrain)
What specific structure is responsible for inducing the formation of the prosencephalon? The prechordal plate lying beneath the neural tube
List the three flexures of the developing nervous system. Cervical, pontine, tele cephalic
Which three regions of the developing CNS form the brain stem? Myelencephalon, metencephalon, mesencephalon
List the cephalic enlargements of the neural tube, their divisions and what each division forms in the fully developed brain. Prosencephalon – telecephalon (cerebrum) and diencephalon (thalamus/hypothalamus); Mesencephalon – mesencephalon (substantia nigra, basal ganglia); Rhombencephalon – metencephalon (pons & cerebellum) and myelencephalon (medulla oblongata).
Which region of the three vesicle stage of CNS development eventually develops the least? The mesencepahlon, joins the diencephalon (thalamus/hypothalamus rostrally) and the metencephalon (pons) caudally
Created by: wiechartm
 

 



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