Chapter 2

Question 1

Primary neurulation consists of _____ vesicles and _____ flexures.

Answer 1

3 primary

2

Question 2

Secondary neurulation consists of _____ vescicles and _____ flexures.

Answer 2

5 secondary

3

Question 3

The neural plate is formed at _____ days.

Answer 3

18

Question 4

The neural plate folds inwards at _____ days.

Answer 4

20

Question 5

At 20 days the neural plate _____.

Answer 5

folds inwards

Question 6

The neural plate folds inwards to make the _____.

Answer 6

neural groove

Question 7

Neural folds fuse at _____ days.

Answer 7

21

Question 8

at 21 days, the _____ fuse.

Answer 8

neural folds

Question 9

The neural folds fuse to form the _____.

Answer 9

neural tube

Question 10

Folding of the neural folds to form the neural tube is exacerbated at _____ days.

Answer 10

22

Question 11

The neural tube zips up at _____ days.

Answer 11

24

Question 12

The neural tube zips up to form the _____

Answer 12

posterior pore

Question 13

The posterior end of the neural tube closes at the spinal cord at _____ days.

Answer 13

26

Question 14

Once the neural tube closes, the dorsal side becomes _____ and the ventral side becomes _____.

Answer 14

sensory neurons

motor neurons

Question 15

Vesicls are _____.

Answer 15

bulges from the neural tube

Question 16

Prosencephalon

Answer 16

Forebrain

Question 17

Mesencephalon

Answer 17

Midbrain

Question 18

Rhombencephalon

Answer 18

Hindbrain

Question 19

Telencephalon

Answer 19

Hemispheres

Question 20

Diencephalon

Answer 20

Thalamus

Hypothalamus

Question 21

Metencephalon

Answer 21

Pons

Cerebellum

Question 22

Myelenecephalon

Answer 22

Medulla

Question 23

Gyrification of the cortex begins around _____.

Answer 23

30-31 weeks

Question 24

The cavity of the neural tube becomes the _____.

Answer 24

ventricles

Question 25

The lateral ventricles fold with the _____ to make a “C” shape

Answer 25

telencephalon

Question 26

The depression in the telencephalon deepens to form the _____.

Answer 26

intraventricular foramen

Question 27

The thalamus and hypothalamus develop as the diencephalon and form the _____.

Answer 27

walls of the 3rd ventricle

Question 28

The choroid plexus sprouts at _____.

Answer 28

7 weeks

Question 29

The lateral ventricles are constructed at _____.

Answer 29

15 weeks

Question 30

White matter connections are made at _____.

Answer 30

5 months

Question 31

_____ is the result of the neural tube not properly closing.

Answer 31

Craniorachischisis

Question 32

_____ is the absence of the CNS when the anterior neural tube fails.

Answer 32

ancephaly

Question 33

_____ prevents neural tube defects.

Answer 33

Folic acid (B9)

Question 34

Defects of secondary neurulation (at the sacral end) result in _____.

Answer 34

spina bifida (myelomeningocele)

Question 35

_____ is a defect of prosencephalon development where the longitudinal fissure is missing/partial, no CC.

Answer 35

Holoprosencephaly

Question 36

Heterotopias

Answer 36

Gray or White matter develops in places it shouldn’t

Question 37

“Smooth brain,” no gyrification.

Answer 37

Lissencephaly

Question 38

Common neurological birth defects:
_____
_____
_____

Answer 38

Agenesis of CC
Enlarged cisterna magna
Fetal Alcohol Syndrome (FAS)

Question 39

placodes

Answer 39

thickenings of the cranial ectoderm

Question 40

sulcus limitans

Answer 40

a longitudinal groove that becomes apparent during the fourth week

Question 41

The _____ becomes the 4th ventricle.

Answer 41

pontine flexure

Question 42

The prosencephalon divides into the _____ and _____.

Answer 42

telencephalon

diencephalon

Question 43

The rhombencephalon divides into the _____ and _____.

Answer 43

metencephalon

myelenencephalon