Midterm 2

Question 1

optimal foraging theory

Answer 1

tradeoff between strategies for obtaining food and strategies for avoiding attack and predation

Question 2

corticospinal tracts

Answer 2

main efferent pathway from layer V of the motor cortex (aka pyramidal tracts)

Question 3

Nestin

Answer 3

dividing cells (becomes negative in type 3)

Question 4

Ki67

Answer 4

cell cycle marker (thus measures proliferation)

Question 5

GFAP

Answer 5

glia marker (becomes negative in type 2)

Question 6

SOX2

Answer 6

self-renewal

Question 7

S100beta

Answer 7

glia marker (negative in type 1)

Question 8

DCX

Answer 8

immature neuronal marker (expressed in type 2) (also measures migrating neuroblasts)

Question 9

Tbr2

Answer 9

developmental regulation (expressed in type 2)

Question 10

NeuN

Answer 10

mature neuron (expressed in cell cycle exit)

Question 11

ongoing brain maturation hypothesis

Answer 11

the process of brain maturation interferes with the storage of memory during infancy

Question 12

BrdU

Answer 12

thymidine analog, incorporated into replicating cells in S phase

Question 13

what are hippocampal-dependent tasks?

Answer 13

MWT, trace eyeblink conditioning

Question 14

what are hippocampal-independent tasks?

Answer 14

cue-maze training, delay eyeblink conditioning

Question 15

how does neurogenesis mediate pattern separation?

Answer 15

it reduces interference