exam 4

Question 1

what four components does the neural tube become

Answer 1

prosencephalon, mesencephalon, rhombencephalon and spinal cord

Question 2

the prosencephalon during maturation becomes

Answer 2

telencephalon and diencephalon

Question 3

the telencephalon becomes

Answer 3

cerebral hemispheres

Question 4

the diencephalon becomes

Answer 4

thalamus

Question 5

the mesencephalon becomes

Answer 5

midbrain

Question 6

during maturation the rhombencephalon becomes the

Answer 6

mesencephalon and myelencephalon

Question 7

the mesencephalon becomes the

Answer 7

pons and cerebellum

Question 8

the myencephalin becomes the

Answer 8

medulla

Question 9

the ____ condenses at the midline to form notochord

Answer 9

mesoderm

Question 10

the ___ becomes neural plate

Answer 10

ectoderm

Question 11

at the dorsal edge of neural tube the ___ ___ develops

Answer 11

neural crest

Question 12

the neural crest migrates away to give rise to ___

Answer 12

PNS

Question 13

the neural crest becomes what four categories of PNS

Answer 13

DRG, autonomic ganglia, adrenal medulla, melanocytes

Question 14

most common form of cell migration is aided by these cells

Answer 14

radial glial cells

Question 15

what is significant about the reeler phenotype

Answer 15

neurons are in the wrong place but adopt appropriate fates by birthdate

Question 16

what is wrong with the reeler phenotype

Answer 16

defective cortical plate, the plate never splits so neurons pile up under plate; yet still reach destination

Question 17

restrict the migration of cells in neural tube and crest; restricts microenvironment the cells are exposed to

Answer 17

rhombomeres

Question 18

what are long range cues for growth cones

Answer 18

chemorepulsion and chemoattractant

Question 19

what are short range cues for growth cones

Answer 19

contact repulsion and contach attraction

Question 20

actin net assembly at + end; net disassembly at - end

Answer 20

treadmilling

Question 21

only DCC receptor axons are attracted to

Answer 21

netrin

Question 22

repulsive when ____ interacts with robo receptors

Answer 22

slit

Question 23

DCC gets silenced by ____ on robo which silences growth cone

Answer 23

CC1

Question 24

spontaneous ___ waves in developing neurons are individual of visual stim. and the info conveyed to LGN of thalamus to the cortex

Answer 24

Ca2+

Question 25

monocular deprivation in early cortical development leads to a loss of ____ associated w/ closed eye

Answer 25

cortex

Question 26

release of cytochrome c revolves around what?

Answer 26

formation of pores of mitochondria

Question 27

when NGF is present what happens

Answer 27

cell survives

Question 28

anti-apoptotic proteins

Answer 28

bcl2/bclw,bcxl

Question 29

pro-apoptotic proteins

Answer 29

bax/bak/bid/bad