DEVELOPMENT OF NERVOUS SYSTEM Flashcards
Basal plate in a developing spinal cord contains _______ neurons and alar late contains ______ neurons.
(sensory @ motor @ mixed)
Basal plate in a developing spinal cord contains [motor] neurons and alar late contains [sensory] neurons.
Forebrain develops as
a. pons
b. cerebral cortex
c. thalamus
d. hypothalamus
e. medulla
Forebrain develops as
b. cerebral cortex
c. thalamus
d. hypothalamus
Neural plate is formed from which germ layer?
Ectoderm
Myelination in spinal cord is completed before birth.
Select one: True / False
False
- Myelination in central nervous system are by ___________
Oligodendrocytes
Three primary brain vesicles are forebrain or _______, midbrain or _______, and hindbrain or _________.
(Mesencephalon @ Rhombencephalon @ Prosencephalon )
Three primary brain vesicles are forebrain or [Prosencephalon], midbrain or [Mesencephalon], and hindbrain or [Rhombencephalon].
Third ventricle communicates with lateral ventricles through [_______] and with fourth ventricle through [_______].
Third ventricle communicates with lateral ventricles through [interventricular foramen of Monro] and with fourth ventricle through [cerebral aqueduct of Syivius].
Regarding neuroepithelium:
[A] neural crest develops from it [B] derived from ectoderm. [C] neuroglia develop from it. [D] neurons develop from it. [E] are simple squamous cells.
Regarding neuroepithelium:
[B] derived from ectoderm.
[C] neuroglia develop from it.
[D] neurons develop from it.
Theme: Development of spinal nerve
Neural crest cell migrate laterally and differentiate –> [_______]. Its central process enters [_______] horn of spinal cord, and [______] process joins the [______] of motor neuron of [_______] horn of spinal cord.
ventral @ dorsal root neuron @ axon @ dorsal @ peripheral
Theme: Development of spinal nerve
Neural crest cell migrate laterally and differentiate –> [dorsal root neuron]. Its central process enters [dorsal] horn of spinal cord, and [peripheral] process joins the [axon] of motor neuron of [ventral] horn of spinal cord.
Myelination of peripheral nerves are by __________
Schwann cell
The derivatives of neural crest include
a. adrenal medulla
b. dorsal root ganglia
c. post ganglionic autonomic neurons
d. Schwann cell
e. preganglionic autonomic neurons
The derivatives of neural crest include
a. adrenal medulla
b. dorsal root ganglia
c. post ganglionic autonomic neurons
d. Schwann cell
Neural plate –> neural fold –> [________] –> neural tube. This process is called [________].
Neural plate –> neural fold –> [neural groove] –> neural tube. This process is called [neurulation].
Cranial end of neural tube is open and called cranial [________], which closes [_____] days early than the caudal [______].
Cranial end of neural tube is open and called cranial [neuropore], which closes [three] days early than the caudal [neuropore].
