lecture 3: cerebrum Flashcards
how many bones make up the neurocranium
8
which bones make up to neurocranum
parital bones (2)
occipital bone (1)
frontal bone (1)
ethmoid (1)
sphenoid (1)
Temporal (2)
what is the name of the skull cap
calvaria
how many bones make up the viscerocranium
14
how many fossa of the skull
3
what are the 3 skull fossa
ant
mid
post
which bones make up the anterior cranial fossa
frontal bone
ethmoid bone
lesser wings of the sphenoid bone
true or false: the greater wings of the sphenoid bones are part of the anterior cranial fossa
false, the lesser wings are
which bones make uo the middle cranial fossa
sphenoid bone
temporal bone
(parietal)
which bones make up the posterior cranial fossa
temporal
occipital
(parietal)
ventral side of the brain stem and cerebellum sits where
in posterior fossa
temporal lobes sit in which fossa
middle cranial
frontal lobes sit in which fossa
anterior cranial
what are the ridges of the brain called
gyri
what are the valleys of the brain called
sucli
what does the central sulcus seperate
frontal lobe (rostrally)
parietal lobe (caudally)
true or false: central sulcus separate the parietal and occipital lobes
false, the frontal and parietal
what does the lateral issue seperate
separates between the temporal lobe mentally and the frontal and parital lobes dorsally
which fissure delimits the two cerebral hemisphere
median longitudinal fissue
which fissure delimits the temporal bone
lateral fissure
which sulcus delimits the parietal and occipital lobes
parietooccipital sulcus
which sulcus lies between frontal and parietal lobes
central sulcus
true or false: the central fissure is not continuous with the lateral fissure
true
where is best to identify the parietooccipital sulcus
medially
what orientation are the pre central and post central gyri
dorsoventral
true or false: most gyro on the lateral surface of the brain are primarily in the dorsoventral direction
false, most in the rostrocaudal orientaiaion
which gyri lies rostral to central culcus
pre central gyris
which gyrus lies caudal to central sulcus
post central gyrus
what are the 3 frontal gyri
sup middle and inferior
what are the three regions of the inferior frontal gyrus
pars orbitalis
parts triangularis
pars opercularis
which region of the inferior frontal gyrus is most rostral
pars orbital
which region of the inferior frontal gyrus is most caudal
parts opercularis
which orientation are the frontal gyri in
rostrocaudal
which sulcus separates the superior and inferior parietal lobules
intraparietal sulcus
where does the intra parietal sulcus meet the post central sulcus
rostrally
true or false: the angular sulcus separates the superior and inferior parietal lobules
false, the intra parietal sulcus does
what are the two important gyri of the inferior parietal lobule
angular gyrus
supra marginal gyrus
how can you find the supra marginal gyrus
follow the lateral fissure until it loops up dorsally
where is t5he supra marginal gyrus located
at the caudal end of the lateral fissure (where it loops up dorsally)
where is the angular gyrus located
at the caudal end of the superior temporal sulcus
what are the 3 major temporal gyri
superior middle inferior
which orientation are the temporal gyrus in
rostrocaudal
what delimits the occipital lobe on the lateral aspect
line between parietooccipital sulcus and pre occipital notch
true or false, there is not division of gyri in the occipital bone
false, there is less distinction that others but there is still superior middle and inferior occipital gyrus
true or false: there are only 3 temporal gyri
FALSE
what sulci and gyri can you find within the lateral fissure
transverse temporal gyri and insula
what is the transverse temporal gyri important for
auditory cortex
the transverse temporal gyri are part of the BLANK
temporal operculum
(lower inflation lip of the lateral fissure)
where is the insula lobe located
deep within the lateral fissure
what cortex is important in the insular lobe
primary gustatory (taste) cortex
(along with the ventral aspect of post central gyrus)
true or false: limbic lobe is ALWAYS a true lobe
false, depends on the source
limbic lobe involves which other lobes of the brain
frontal, parietal and temporal lobe
what are some functions of the limbic lobe
emotions
memory
reward
motivation
maintaining homrostatis
what is the gyri that surrounds the limbic cortex
cingulate gyrus,
then parahippocampal gyrus
what sulcus surrounds the cingular gyrus
cingulate sulcus
what does the cingulate sulcus become as it moves dorsally
marginal sulcus
what delimits the parietal and occipital lobe medially
parietooccipital sulcus
calcarine sulcus is located in what love
occipital
what sulcus does the calcarine sulcus extend from
pareitooccipital sulcus and extends caudallyca
does the calcarine sulcus extend caudally or rostrally from the parietooccipital sulcus
caudally
what does the calcarine sulcus seperate
lingual gyrus (inf)
cuneus (sup)
is the lingual gyrus inferior or superior to calcarine sulcuis
inf
which two gyri combine4 to form the hippocampal gyrus
lingual gyrus
cingulate gyrus
the cingulate sulcus is continuous with what sulcus as it courses dorsally
marginal
what lobe is the precuneus in
parietal
is the precuneus located rostral or caudal to the parietooccipital sulcus
rostral
is the paracentral lobule located rostral or caudal to the marginal sulcus
rostral
in what lobe is the gyrus rectus
frontali
in what lobe is the subcollasal gyrus
frontal
true ro false: cuneus is rostral to precuneous
false, it is caudal to
what are the gyri of the temporal lobe in the medial view
occipitotemporal gyrus (fusiform)
parrahippocampal gyris
in what lobe is the parrahippocampal gyrus located
temporal
what is the rostral extremity of the parahippocampal gyrus located
rostral extremity
what sulcus separates the occipitotemporal gyrus from the parahipposcrampal gyrus
medial occipitotemporal sulcus (collateral)
which gyrus is located under the corpus callosum
subcallosal gyrus
where is the primary somatosensory cortex located
post central gyrus in the parietal lobe
where is the primary motor cortex located
pre central gyrus in the frontal lobe
where is primary visual cortex
surrounding and within calcarine fissure (occipital lobe)
where is the primary olfactory cortex
piriform cortex (near the uncus)
=temporal lobe
where is the primary gustatory cortex
anterior insula and frontal operculum
where is the primary auditory cortex located
superior and transverse temporal gyri (temporal lobe)
a patient has a lesion in the post central gyrus in the left brain, what will be affected
somatosensory deficits in the right upper limb
which part of the inferior frontal gyrus is most caudal
pars opercularis
