extra-quiz om abnormal hjärnutveckling

Question 1

Anencephaly

Answer 1

cerebral hemispheres, diencephalon and midbrain are absent

Question 2

Holoprosencephaly

Answer 2

cortex forms a single undifferentiated hemisphere

Question 3

Cerebellar agenesis

Answer 3

parts of the cerebellum, basal ganglia or spinal cord are absent or malformed

Question 4

Lissencephaly

Answer 4

Brain fails to form sulci and gyri and corresponds to that of a 12 week embryo

Question 5

Micropolygyria

Answer 5

gyri are more numerous, smaller and more poorly developed than typical

Question 6

Macrogyria

Answer 6

gyri are broader and less numerous than typical

Question 7

Microencephaly

Answer 7

development of the brain is rudimentary, and the person has low-grade intelligence

Question 8

Porencephaly

Answer 8

cortex has symmetrical cavities where cortex and white matter should be

Question 9

Heterotopia

Answer 9

displaced islands of gray matter appear in the ventricular walls or white matter, caused by aborted cell migration

Question 10

Callosal agenesis

Answer 10

Entire corpus callosum or a part of it is absent