pre-lab questions Flashcards
the brain and spinal cord are covered by three separate membranes called ________.
meninges
which of the following is one of the two partitions that are made of fused dural layers?
tentorium of the cerebellum
this part of the meninges lies just below the dura
arachnoid mater
how many cranial nerves are there?
12
how many cranial nerves mediate motor behaviors?
5
which cranial fossa contains the opening through which the brain and spinal cord are continuous with each other?
posterior
which cranial nerve gains access to the CNS through the cribiform plate?
cranial nerve 1
what is the name of the large sinus that runs along the midline?
superior sagittal sinus
how many nerves exit via the superior orbital fissure?
4
which cranial fossa contains the opening through which the brain and spinal cord are continuous?
posterior
the right and left vertebral arteries join ton form which artery?
basilar artery
in humans, this structure clearly separates the temporal lobe from the frontal and parietal lobes
Sylvian fissure
to find the boundary of the frontal lobe you first find which sulcus?
superior frontal sulcus
in the human, the basilar artery bifurcates into which artery?
posterior cerebellar artery
the basilar artery lies at the base of which structure?
pons
in the sheep, the superior frontal sulcus terminates into which structure?
crucial sulcus
when you lift the hippocampus, what underlying structure do you expose?
thalamus
the space between the cerebellum and the brainstem is called what?
fourth ventricle
what structure “kneels” on the anterior commissure?
columns of the fornix
when you open the interhemispheric fissure you can see what structure?
corpus callosum
the brainstem contains several collections of cell bodies called what?
cranial nerve nuclei
CSF flows from the ventricle into the subarachnoid space through which structure?
foramen of magendie
where is the third ventricle located?
between the thalamus and the hypothalamus
which commissure interconnects the olfactory structures and regions of the middle and inferior temporal gyrus?
anterior commissure
which part of the ventricular system connects after the third or fourth ventricles?
cerebral aqueduct
you will know if you make the perfect midline sagittal cut if this structure is left completely intact in both hemispheres
septum pellucidum
which peduncle connects the cerebellum to the pons?
middle cerebellar peduncle
which of these is the most extensive projection fiber tract connecting the cortex to the cerebellum, brainstem, and spinal cord?
internal capsule
each ventricle contains a vascular structure known as what ?
choroid plexus
this cerebellar structure receives somatosensory information from the spinal cord and sends its outputs via the fastigial nucleus to the vestibular and motor nuclei in the reticular formation
vermis
what kind of stain is used for the histology lab?
mulligan stain
which of these chemicals is not in solution A ?
1) bromine
2)phenol
3) copper sulfate
4)HCl
bromine
how long do you submerge your slices in solution A ?
1-5 minutes
after submerging your slices in solution A, what solution do you place the slices next?
dH2O
how long do you place your sections on the tannic acid?
1 minute
what color should the gray matter become after staining?
black
the gray matter should change color after submerging the slices in which of the following?
iron alum
what solution do you put the slices in after the tannic acid?
dH2O
after the final dH2O rinse, where should you place your slices so that you can observe the results of the staining?
dissection tray
when you are finished for the day, which of the following do you use to preserve the stain and keep the sides from dehydrating while stored?
dH2O
