Cortex

Question 1

dorsal notochord (roofplate) secretes

Answer 1

BMP > sensory

Question 2

ventral notochord (floorplate) secretes

Answer 2

SHH > motor

Question 3

layer 1 (molecular layer)

Answer 3

Cajal-Retzius cells, some white matter

Question 4

layer 2

Answer 4

external granular layer, youngest, small granular neurons, cortico-cortico fibers

Question 5

layer 3

Answer 5

external pyramidal layer, medium pyramidal neurons, cortico-cortico fibers

Question 6

layer 4

Answer 6

internal granular layer, stellate and granule, mostly receive sensory

Question 7

layer 5

Answer 7

internal pyramidal layer, large pyramidal neurons, corticostriate fibers

Question 8

layer 6

Answer 8

polymorphic layer, olderst, intralaminar synapses, cortico-thalamic fibers

Question 9

corpus callosum formed by layers

Answer 9

2 and 3

Question 10

area 4

Answer 10

primary motor cortex

Question 11

area 6

Answer 11

premotor and supplementary motor cortex

Question 12

areas 44 and 45

Answer 12

Broca’s area

Question 13

areas 9, 10, 11, and 46

Answer 13

prefrontal cortex

Question 14

area 8

Answer 14

frontal eye fields

Question 15

areas 1, 2, 3

Answer 15

primary somatosensory cortex

Question 16

areas 41 and 42

Answer 16

primary auditory cortex

Question 17

area 22

Answer 17

Wernicke’s area

Question 18

area 17

Answer 18

primary visual cortex (V1)

Question 19

area 18

Answer 19

visual association cortex (V2)

Question 20

arcuate fasciculus connects

Answer 20

inferior frontal gyrus to superior temporal gyrus (Broca’s to Wernicke’s)

Question 21

projection fibers connect

Answer 21

cortex to subcortex

Question 22

last two parts of brain to myelinate

Answer 22

1. association cortex

2. reticular formation