NEUR 2035 Midterm- Lab 1

Question 1

True or false:

For a sheep, the sagittal plane cuts the body left and right. The coronal plane cuts the body anterior and posterior. The horizontal plane cuts the body rostral and caudal.

Answer 1

False

Question 2

Which lobe is the most posterior?
A. Temporal
B. Frontal
C. Parietal
D. Occipital

Answer 2

D

Question 3

True or false:

The corpus callosum allows for left and right brain communication. The thalamus allows for different parts of the brain to communicate. Cranial nerves allow the brain to communicate with different parts of the body.

Answer 3

True

Question 4

Which part of the brain does not secrete hormones?
A. Pituitary
B. Pineal gland
C. Hypothalamus
D. Thalamus

Answer 4

D

Question 5

True or false:

The corpus callosum is composed of the fibers (axons) of neurons, that is why it is white matter. The gray matter of the brain is composed of the soma (body) of the neurons.

Answer 5

True

Question 6

True or false:

Olfactory bulbs (the enlarged part of the olfactory nerve) are posterior to optic chasm (the x shaped part of the optic nerve).

Answer 6

False

Question 7

True or false:

Using fMRI, we cannot tell if a particular neuron is active or not. We can only tell if a certain region of the brain is active or not.

Answer 7

True

Question 8

True or false:

The brain is a component of the peripheral nervous system.

Answer 8

False

Question 9

The brains used in the dissection lab came from…
A. Rat
B. Donkey
C. Sheep

Answer 9

C

Question 10

True or false:

Sheep brains have larger olfactory bulbs than human brains.

Answer 10

True

Question 11

During the sheep brain lab, the meninges we cut were…
A. Dura mater
B. Dura mater + arachnoid mater + pia mater

Answer 11

A

Question 12

True or false:

The pituitary and optic chiasm are both wrapped by meninges.

Answer 12

True

Question 13

True or false:

The rhinal sulcus is lateral to the periamygdaloid cortex.

Answer 13

True

Question 14

True or false:

If someone has a pituitary tumor, their vision might be affected because the tumor can put pressure on the optic chiasm (true).
True or False: Their recollective memory might also be affected (clue: mammillary body)

Answer 14

True

Question 15

True or false:

Lateral ventricles are hollow structures that hold CSF. There is nothing else there other than the CSF.

Answer 15

False

Question 16

Which structure is the most dorsal on a sheep brain?
A. Corpus callosum
B. Fornix
C. Pituitary
D. Lateral Ventricle

Answer 16

A

Question 17

True or false:

At the beginning of one step, we cut away all tissues anterior to the periamygdaloid cortex, it will help us locate the amygdala on the coronal sections.

Answer 17

True

Question 18

What is the structure located between the corpus callosum and the fornix on a midsagittal plane?
A. Thalamus
B. Lateral ventricle
C. Hippocampus
D. Anterior commissure

Answer 18

B

Question 19

Which of the following structures is the most anterior?
A. Superior colliculus
B. Pineal gland
C. Thalamus

Answer 19

C

Question 20

What toxic chemical is in sheep brain tissue, so we have to dispose of the brain in the solid chemical waste bin.
A. Formalin
B. CSF
C. Water
D. Sugar

Answer 20

A

Question 21

True or false:

We have to wear PPE for this lab, because the sheep brain was preserved in formalin. Formalin is toxic and we need PPE to protect us from formalin getting on our skin or eyes.

Answer 21

True

Question 22

What is the tough outermost membrane enveloping the brain?
A. Neural sac
B. Pia mater
C. Arachnoid Layer
D. Dura mater

Answer 22

D

Question 23

True or false:

For vertebrates, the CNS developed from a structure of fluid-filled tube and the brain developed from swellings that occur at the anterior end of this fluid-filled tube.

Answer 23

True

Question 24

All gloves and brain tissues after this lab must be disposed in:
A. Chemical waste container
B. Anywhere in fume hood
C. Biological waste container
D. Sink

Answer 24

A

Question 25

CSF is generated in the ventricles originally. CSF is basically plasma leaked into ventricles from blood vessel (aka chroid plexus). Then CSF will flow to the ________ space. A. Subdural B. Subarachnoid C. Epidural

Answer 25

B

Question 26

You are a neuroscientists studying the relay of sensory information to a cortex in the brain. Which brain structure might you be studying? A. Amygdala B. Thalamus C. Hippocampus D. Hypothalamus E. Fornix

Answer 26

B

Question 27

# True or false: In order to use stereotactic surgery to deliver a drug into a mouse lateral ventricles, we have to locate bregma before starting.

Answer 27

True

Question 28

The innermost layer of the meninges is ____ mater.

Answer 28

Pia

Question 29

Which structure(s) in the brain connect the right and left cerebral hemispheres? A. Anterior commissure B. Corpus callosum C. Hippocampus D. Superior colliculus

Answer 29

A and B

Question 30

# True or false: For a sheep brain, the parietal lobe is more posterior to the occipital lobe.

Answer 30

False

Question 31

Which statement(s) about the pituitary stalk is/are true? A. It is anterior to the optic chiasm B. It is a hollow structure C. It connects the pituitary to the thalamus D. It is anterior the mammillary body in a sheep brain.

Answer 31

B and D

Question 32

fMRI can be used to assess the activity of certain brain regions because fMRI can.... A. Tell the blood oxygen level of certain brain regions B. Tell exactly which neurons are active C. Tell how many neurons are in certain brain regions D. Tell the region of the brain that is active | (select all that apply)

Answer 32

A and D

Question 33

# True or false: Corpus callosum is white matter, and it does have a lighter color in a preserved sheep brain.

Answer 33

True

Question 34

Which sense might be affected by an injury to the occipital lobe? A. touch B. sight C. taste D. sound E. smell

Answer 34

B

Question 35

# True or false: If you make a serial coronal sections of 0.2 cm thick of a sheep brain, you can find the pineal gland and anterior commissure in one coronal section.

Answer 35

False

Question 36

List the three cranial nerves responsible for eye movement.

Answer 36

1. Cranial Nerve III: Oculomotor Nerve 2. Cranial Nerve IV: Trochlear Nerve 3. Cranial Nerve VI: Abducent Nerve

Question 37

# True or false: If you make a mid-sagittal cut of a sheep brain, the portion of the hippocampus that you can see is more anterior to the pineal gland.

Answer 37

True

Question 38

What is "interaural"?

Answer 38

Where the two ear bars would meet if allowed to do so

Question 39

What is "bregma"?

Answer 39

The location on the skull where the coronal suture meets the sagittal suture

Question 40

What are the reference points for determining the interaural distance on a stereotactic mouse brain map?

Answer 40

Interaural, bregma, and lambda