WEEK 1: Congenital Anomalies and Embryology [Youtube Lec]

Question 1

when does the CNS start to develop?

Answer 1

at the beginning of 3rd week

Question 2

the neural plate invaginates to form the

Answer 2

neural groove

Question 3

the notochord will form the

Answer 3

nucleus pulposus

Question 4

when does anterior neuropore close? post?

Answer 4

25 and 27

Question 5

in the devt of the spinal cord, the intermediate zone will be?

Answer 5

the grey matter of the spinal cord

Question 6

marginal zone in the devt of spinal cord will be?

Answer 6

myelinated white matter

Question 7

neuroblast will give rise to?

Answer 7

astrocytes and oligodendrocytes

Question 8

microglia is derived from>

Answer 8

Surrounding mesenchyme

Question 9

pia arachnoid and dura maters are formed from?

Answer 9

mesenchyme

Question 10

what is spina bifida occulta vs cystica?

Answer 10

occulta yung arch lang yung problem, walang protrusion. pag cystica, tatlo yan
meningocele
myelomeningocele
myelocele ( rachischisis)

Question 11

forebreain will give rise to?

Answer 11

telecephalon and diencephalon;
telencephalon - lateral ventricles
diencephalon - third ventricle

Question 12

mesencephalon will give rise to?

Answer 12

midbrain and aqueduct of sylvius

Question 13

rhombencephalon will give rise to?

Answer 13

pons, medulla, cerebellum and 4th ventricle

Question 14

the 4 colliculi in the midbrain develops from?

Answer 14

tectum which developed from the alar plates

Question 15

tegmentum of the midbrain develops from?

Answer 15

basal plate

Question 16

the marginal layer of the basal plate forms the

Answer 16

crus cerebri

Question 17

difference of internal and external hydrocephalus?

Answer 17

internal hydroceph: the CSF accumulates within the ventricles of the brain; external: CSF accumulates between the brain and the arachnoid matter

Question 18

exencephaly

Answer 18

absence of the vault of the skull; anencephaly if wala ding brain

Question 19

results from the degeneration of midline structures leading to fusion of lateral ventricles, orbital and nasal cavities

Answer 19

holoprosencephaly