Week 1

Question 1

Two cells of the bilaminar disc

Answer 1

Epiblast and hypoblast

Question 2

Process in which epiblasts move towards the primitive node

Answer 2

Neural induction.

Question 3

The line dissecting the centre of the bilaminar disc

Answer 3

Primitive streak

Question 4

3 layers of trilaminor disc

Answer 4

Endoderm
Ectoderm
Mesoderm

Question 5

Area of trilaminar disc where duramater is formed

Answer 5

Mesoderm

Question 6

Area of trilaminor disc where CNS , arachnoid and Pia mater is formed

Answer 6

Ectoderm

Question 7

Where does lamina terminales appear?

Answer 7

Anterior neuropore

Question 8

Name of the openings that close on either side of the neural tube

Answer 8

Neuropores

Question 9

Cells released from neural tube to create the PNS

Answer 9

Neural crest cells

Question 10

What day does the anterior neuropore close?

Answer 10

25

Question 11

When does the posterior neuropore close ?

Answer 11

Day 27

Question 12

What does failure of the anterior neuropore closure result in?

Answer 12

Anencephaly

Question 13

What does failure of the posterior neuropore cause ?

Answer 13

Spinal bifida

Question 14

What does astroglia do ?

Answer 14

Surround blood capillaries

Question 15

What does the choroid plexus do?

Answer 15

Form CSF and form blood brain barrier

Question 16

When do the 3 primary vesicles develop?

Answer 16

Week 4

Question 17

Name the 3 primary vesicles and the 2 flexures

Answer 17

Prosencephalon
Mesencephalon
Cephalon flexure
Rhombencephalon
Cervicical flexure

Question 18

Is the alar plate sensory or motor?

And which is the basal?

Answer 18

Alar = sensory

basal= motor

Question 19

When does myelonation of the corticospinal tract occur ?

Answer 19

Completed in 2nd post natal year

Question 20

When is myelination of the association neocortex complete ?

Answer 20

3rd decade

Question 21

What week of development does the spinal cord extend the length of the vertebral column?

Answer 21

Week 8

Question 22

Name the main sub cortical structures of the cerebrum/ telencephalon.

Answer 22

Hippocampus 
Amygdala
Thalamus
Hypothalamus
Majority of basal root ganglia

Question 23

What cortex is found in the pre central gyrus

Answer 23

Motor cortex

Question 24

What cortex is found in the post central gyrus?

Answer 24

Somatosensory cortex

Question 25

Where is CSF produced.

Answer 25

Choroid plexus

Question 26

Which mater does CSF flow into?

Answer 26

Sub arachnoid space

Question 27

How does CSF diffuse out of the choroid plexus?

Answer 27

Arachnoid granulations

Question 28

What connects the lateral ventricle to the third ventricle??

Answer 28

Interventricular foramen

Question 29

What is the choroid plexus lines with ?

Answer 29

Epedymal cells

Question 30

How does CSF flow into the sub arachnoid space ?

Answer 30

2x lateral aperture | 1x median aperture

Question 31

Name the 4 sub arachnoid cisterns

Answer 31

Cisterna magna Quadrigemital (superior) cistern Interperduncular cistern Pontine cistern

Question 32

What is hydrocephalus?

Answer 32

Enlarged ventricles

Question 33

Name the 4 suture junctions

Answer 33

Bregma Lambda Pteroin Asterion

Question 34

What is the area of the ethmoid bone in which the olfactory nerves pass through ?

Answer 34

Cribifrom plate

Question 35

What dissects the centre of the ethnoid bone?

Answer 35

Cristi gali

Question 36

Which 1 nerve does not sit under flax cerebri?

Answer 36

CN1

Question 37

What cortex is found in the insula ?

Answer 37

Gustatory

Question 38

Name the 4 dural sheets

Answer 38

Falx cerbri Falx ceribelli Tentorium ceribelli Diaphragm sallea

Question 39

Name the sinuses for venous drainage in the skull and describe each

Answer 39

Superior and inferior saggital sinus Straight sinus Transverse sinus Sigmoid sinus ``` Confluence of sinus Cavernous sinus (CN 3, 4 5 (1&2) 6) and Int. carotid ```