NEUR 2035 Midterm- Lab 1 Flashcards
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.
False
Which lobe is the most posterior?
A. Temporal
B. Frontal
C. Parietal
D. Occipital
D
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.
True
Which part of the brain does not secrete hormones?
A. Pituitary
B. Pineal gland
C. Hypothalamus
D. Thalamus
D
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.
True
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).
False
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.
True
True or false:
The brain is a component of the peripheral nervous system.
False
The brains used in the dissection lab came from…
A. Rat
B. Donkey
C. Sheep
C
True or false:
Sheep brains have larger olfactory bulbs than human brains.
True
During the sheep brain lab, the meninges we cut were…
A. Dura mater
B. Dura mater + arachnoid mater + pia mater
A
True or false:
The pituitary and optic chiasm are both wrapped by meninges.
True
True or false:
The rhinal sulcus is lateral to the periamygdaloid cortex.
True
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)
True
True or false:
Lateral ventricles are hollow structures that hold CSF. There is nothing else there other than the CSF.
False
Which structure is the most dorsal on a sheep brain?
A. Corpus callosum
B. Fornix
C. Pituitary
D. Lateral Ventricle
A
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.
True
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
B
Which of the following structures is the most anterior?
A. Superior colliculus
B. Pineal gland
C. Thalamus
C
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
A
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.
True
What is the tough outermost membrane enveloping the brain?
A. Neural sac
B. Pia mater
C. Arachnoid Layer
D. Dura mater
D
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.
True
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
A
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
B
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
B
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.
True
The innermost layer of the meninges is ____ mater.
Pia
Which structure(s) in the brain connect the right and left cerebral hemispheres?
A. Anterior commissure
B. Corpus callosum
C. Hippocampus
D. Superior colliculus
A and B
True or false:
For a sheep brain, the parietal lobe is more posterior to the occipital lobe.
False
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.
B and D
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)
A and D
True or false:
Corpus callosum is white matter, and it does have a lighter color in a preserved sheep brain.
True
Which sense might be affected by an injury to the occipital lobe?
A. touch
B. sight
C. taste
D. sound
E. smell
B
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.
False
List the three cranial nerves responsible for eye movement.
- Cranial Nerve III: Oculomotor Nerve
- Cranial Nerve IV: Trochlear Nerve
- Cranial Nerve VI: Abducent Nerve
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.
True
What is “interaural”?
Where the two ear bars would meet if allowed to do so
What is “bregma”?
The location on the skull where the coronal suture meets the sagittal suture
What are the reference points for determining the interaural distance on a stereotactic mouse brain map?
Interaural, bregma, and lambda
