Practice exam 1

Question 1

At which stage of development are cells in the nervous system called neuroblasts

Answer 1

migration

Question 2

The neural tube appears

Answer 2

In all vertebrates

Question 3

Axons grow to their targets as part of

Answer 3

differentiation

Question 4

NGF (nerve growth factor) is

Answer 4

a neurotrophic factor

Question 5

There is no proliferation of neurons in humans after birth in which of the following
areas?

Answer 5

cerebral cortex

Question 6

For any given cell in the nervous system, which developmental stage often overlaps
with differentiation?

Answer 6

pruning

Question 7

If the size of a structure does not change between two ages, you can conclude that

Answer 7

There may be cellular changes that both add and subtract from the size

Question 8

Schwann cells

Answer 8

form myelin in the PNS

Question 9

What is pruned in the rat prefrontal cortex during adolescence?

Answer 9

synapses and neurons

Question 10

What do NMDA receptors require in order to open?

Answer 10

glutamate binding and strong depolarization in the postsynaptic cell

Question 11

What does NOT happen in the adult brain?

Answer 11

long axon growth

Question 12

In order for humans to fuse the images from the left and right eye, neurons carrying
information from the eyes

Answer 12

need to carry action potentials at the same time by 2 years of age

Question 13

Increases in neurotransmitter receptors after the loss of a neurotransmitter is

Answer 13

deneravation supersensitivity

Question 14

Anterograde degeneration

Answer 14

always occurs

Question 15

Which does not occur in the CNS, but does in the PNS

Answer 15

regrowth of damaged axons

Question 16

L-DOPA is used to treat the symptoms of

Answer 16

Parkinson’s disease

Question 17

A loss of myelin is characteristics of

Answer 17

multiple sclerosis

Question 18

Most tumors that originate in the brain arise from

Answer 18

Increased proliferation of glia

Question 19

Too much excitatory neurotransmitter and not enough inhibitory neurotransmitter
results in

Answer 19

epilepsy

Question 20

Concussions fall under the category of

Answer 20

Traumatic brain injury (TBI)

Question 21

Lewy body dementia may be an extreme form of

Answer 21

Parkinson’s disease

Question 22

The form of dementia that typically results in the most overall brain shrinkage is

Answer 22

Alzheimer’s disease

Question 23

Neurofibrillary tangles are associated with

Answer 23

Alzheimer’s disease

Question 24

Progesterone works as a form of birth control in humans because it

Answer 24

Stops the rise of LH

Question 25

Sperm are manufactured in the

Answer 25

testes

Question 26

Which species have menstrual cycles?

Answer 26

some primates

Question 27

In order to do the lordosis reflex, rat females

Answer 27

need estrogen and progesterone at the time of lordosis

Question 28

In the female hormonal cycle, LH is secreted

Answer 28

in response to high E

Question 29

Which of the following is NOT part of the Wolffian ducts

Answer 29

testes

Question 30

The penis grows from the same tissue as the

Answer 30

clitoris

Question 31

An XY rat pup has its testes removed at birth. As an adult, this rat will

Answer 31

exhibit lordosis if given E and P

Question 32

The gene for Mullerian inhibiting hormone is

Answer 32

is found on the Y chromosome

Question 33

Brothers have a ______ chance of having the same X chromosome from their
mother

Answer 33

50%

Question 34

Circulating T increases apoptosis during development in the

Answer 34

AVPV

Question 35

Which of the following is most likely to increase the chances of a male having a
homosexual orientation

Answer 35

Being the youngest male of several males that you mother has had

Question 36

If you know the size of a person’s INAH3, you would know

Answer 36

you would not be certain of either sex or sexual orientation

Question 37

Which of the following has testes?

Answer 37

XY with CAH
and
XY with androgen insensitivity

Question 38

XY individuals with androgen insensitivity have

Answer 38

a clitoris

Question 39

The Women’s Health Initiative was a clinical trial to examine the effects of giving E
and P to

Answer 39

post-menopausal women

Question 40

There is evidence that in performing the same task, females tend to use __________
compared to males

Answer 40

both sides rather than one side of the cortex