Development of CNS and PNS Flashcards
During which week of embryological development does the CNS form?
3rd week
Which type of embryological tissue forms the neural plate?
Ectoderm
Name 8 derivatives of neural crest cell migration?
Dorsal root ganglia Melanocytes Odontoblasts Parafollicular thyroid cells (secretes Calcitonin) Adrenal medulla Autonomic cell ganglia Tracheal cartilage Schwann cells
Failure of closure of the caudal neuropore leads to which condition?
Spina bifida
Failure of closure of the cranial neuropore leads to which condition?
Anencephaly
What does the prosencephalon differentiate into?
Telencephalon and Diencephalon
Which parts of the brain arise from the mesencephalon?
Tectum and Tegmentum
What does the Rhombencephalon differentiate into?
Metencephalon and Myencephalon
Which parts of the brain arise from the Telencephalon?
Cerebral cortex, Basal ganglia, Ventricles of the brain
Which parts of the brain arise from the Diencephalon?
Thalamus, Hypothalamus
Which parts of the brain arise from the Metencephalon?
Cerebellum
Which parts of the brain arise from the Myencephalon?
Pons, Medulla
What is the function of the Tectum?
Reflex response controll
How many pairs of cranial nerves are there?
12
How many pairs of spinal nerves are there?
31