Chapter 3 Part 3

Question 1

Children have abnormally small heads/brains due to interruption of neural proliferation

Answer 1

Microcephaly

Question 2

Birth of new neurons

Answer 2

Neurogenesis

Question 3

New neurons move in wave-like fashion to their correct position in the cerebral hemispheres; 6 layers of the cerebral cortex are established

Answer 3

Neuronal migration

Question 4

Chemical that signals neurons where to stop during neural migration

Answer 4

Reelin

Question 5

How many layers do we have in the cerebral cortex?

Answer 5

6

Question 6

Clefts in cerebral hemispheres due to lack of reelin

Answer 6

Schizencephaly

Question 7

Smooth brain that lacks sulci and gyri due to lack of reelin

Answer 7

Lissencephaly

Question 8

Period where neurons arrive at the intended spot and sprout dendrites and axons

Answer 8

Cortical organization and synapse formation

Question 9

Synapses begin to form between neurons

Answer 9

Synaptogenesis

Question 10

Eliminates unneeded synaptic connections

Answer 10

Synaptic pruning

Question 11

Too many gyri in the cerebral hemisphere

Answer 11

Polymicrogyria

Question 12

Period where neurons are coated with myelin, process reaches peak 1 year after birth; infants gain greater controls of their bodies and begin to develop to communicate verbally

Answer 12

Myelination

Question 13

Reduced ability to form myelin resulting in intellectual disability

Answer 13

Hypomyelination