2.7 Development of the Nervous System

Question 1

neurulation

Answer 1

The early processes that go into forming the nervous system

Question 2

neural groove

Answer 2

As the nervous system continues to develop, the cells at the lateral borders of the neural plate push upwards. This causes the more central cells of the neural plate to invaginate to form the neural groove

Question 3

neural tube

Answer 3

As the groove deepens the cells form the neural tube.

Question 4

asymmetrical division

Answer 4

At the end of 6 weeks, when there is a stockpile of cells, asymmetrical division begins. After every cell division, one of the two cells formed becomes a migratory cell destined to be part of another layer.

Question 5

synaptogenesis

Answer 5

Formation of synapses and the growth of dendrites

Question 6

synapse elimination / pruning

Answer 6

Th e elimination of some synaptic contacts betw ee n neurons during development, including postnatally.

Question 7

neurogenesis

Answer 7

the birth of new neurons