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Neuroscience 1 > Topographic Anatomy of the Brain > Flashcards

Topographic Anatomy of the Brain Flashcards

1
Q

ventral median fissure of medulla

A

midline groove on the anterior medulla between 2 pyramids

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2
Q

pyramids

A

prominences immediately lateral to median fissure that contain corticospinal neurons

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3
Q

pyramidal dessucation

A

place where most corticospinal tract fibers cross to contralateral side

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4
Q

interior olives

A

prominences found lateral to pyramids

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5
Q

post-olivary sulcus

A

found lateral to inferior olives- contain spinal nerves 9, 10,

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6
Q

pre-olivary sulcus

A

between pyramid and inferior olives, contain spinal nerve 12

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7
Q

what nerves emerge at the junction between the medulla and pons anteriorly

A

6 7 8, with 6 being medial and 8 being lateral

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8
Q

large protuberance on anterior pons

A

basal pons

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9
Q

middle cerebellar peduncles

A

white matter tracts found on the lateral anterior pons

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10
Q

where does CN 5 emerge?

A

middle cerebellar peduncles- anterior-lateral pons

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11
Q

cerebral peduncles

A

white matter tracts of the anterior midbrain just raustral to the pons

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12
Q

crus cerebri

A

cerebral peduncles

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13
Q

interpenducular fossa

A

fossa between the cerebral peduncles containing mammillary bodies

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14
Q

where does the ocumomotor nerve arise from

A

CN 3 originates in the interpenduncular fossa in the anterior midbrain

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15
Q

infundibilum

A

pituitary stalk

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16
Q

tuber cinereum

A

area between mammilary bodies and infundibilum

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17
Q

optic chiasm

A

location where the right and left optic tract merge

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18
Q

vermis

A

midline portion of cerebellum

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19
Q

folia

A

folds in the cerebellum

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20
Q

posterolateral fissure of the cerebellum

A

a ventral fissure in the cerebellum that divides flocculus and posterior lobe

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21
Q

cerebellar tonsil

A

most inferior cerebellum that lies just superior to the foramen magnum

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22
Q

gracile

A

prominence immediately lateral over the gracile nucleus on the posterior medulla.

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23
Q

cuneate tubercles

A

prominence lateral to the gracile on the posterior medulla

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24
Q

inferior cerebellar peduncle

A

dorsolateral white matter tract connecting midbrain to cerebellum

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25
the caudal most point of the 4th ventricle
obex
26
longitudinal running grooves on the floor of the 4th ventricle
sulcus limitans
27
hypoglossal and vagal trigones
cranial nerve nuclei visible on the dorsal medulla superior to the obex and gracile
28
facial colliculus
continusous w/ hypoglossal and vagal trigones, but superior. found above the striae medullares
29
the junction between rostral dorsal medulla and pons
striae medullares
30
vestibular area
lateral to the sulcus limitans in the 4th ventricle
31
corpora quadrigemina
found on posterior midbrain, superior and inferior colliculi
32
brachium of the colliculi
the superior colliculi have a branch that extends called the brachium of the superior colliculi similarly, there is an brachium of the inferior colliculi
33
structure found immediately dorsal to the superior colliculi
pineal gland
34
what structures separate the 4 lobes
sylvian fissure, central sulcus, parieto-occipital sulcus
35
area of the brain responsible for motor movement
precentral gyrus of the frontal lobe
36
area of the brain responsible for sensation
postcentral gyrus of the parietal lobe
37
precentral sulcus
sulcus immediately anterior to precentral gyrus
38
postcentral sulcus
sulcus immediately posterior to postcentral gyrus
39
describe the divisions of the frontal lobe
superior, middle, and inferior frontal gyri
40
what are the divisions of the inferior frontal gyrus?
opercular- brocas area in dominant hemisphere, most dorsal triangular- middle area, triangle pointing at temporal tip orbital- closes to eyes
41
straight gyrus
inferior surface of ventral frontal lobe, most medial gyrus
42
olfactory sulcus
immediately lateral to straight gyrus, the olfactory bulb runs here
43
orbital frontal gyri
immediately lateral of olfactory sulcus
44
medial and lateral stria of the olfactory bulb
olfactory bulb splits medially and laterally
45
describe structures on the lateral temporal lobe
divided into an inferior, middle, and superior temporal gyri
46
angular gyrus
posterior to the lateral fissure
47
gyrus that caps the lateral fissure
supramarginal gyrus
48
sulci running into center of brain on anterior temporal surface
transverse gyri of heschl
49
area that becomes visible when lateral fissure is opened
insula
50
parahippocampal gyrus
most medial gyrus on inferior temporal lobe
51
hippocampal sulcus
space medial to parahippocampal gyrus
52
collateral sulcus
sulcus immediately lateral to parahippocampal gyrus
53
uncus
medial swelling on rostral parahippocampal gyrus
54
corpus callosum
large connection between the two cerebral hemispheres
55
rostrum, genu, body and splenium
rostrum- anterior and inferior corpus callosum that has folded back on itself and is underneath the lateral ventricle genu- rostral most swelling of CC body- portion of CC that connects the genu and splenium splenium- caudal most swelling
56
gyrus following the dorsal aspect of the corpus callosum
cingulate gyrus
57
gyrus that is in contact w/ the rostrum of the corpus callosum
subcallosal gyrus
58
calcarine sulcus
sulcus w/in occipital lobe that meets parieto-occipital sulcus and divides the visual areas
59
septum pellucidum
membrane that separates the two lateral ventricles
60
fornix
c-shaped white matter tract that follows the course lateral ventricles. runs from hippocampus to hypothalamus
61
anterior commissure
tract that connects the two temporal lobes found at the dorsal lamina terminalis
62
hypothalamic sulcus
divides thalamus and hypothalamus
63
connection between the two thalami
thalamic adhesion
64
habenula
paired nuclei located at the end of the stria medullaris thalami. connected posteriorly to the pineal gland
65
stria medullaris thalami
ridge along dorsal thalamus w/ neurons connecting amygdala and habenula
66
what must CSF pass through if it is to go from the lateral ventricles to the 3rd ventricle
foramen of monroe (ventral to fornix)
67
choroid plexus
specialized epithelium that produces CSF
68
prominent bulge on the floor of the lateral ventricle
caudate nucleus. head of the caudate is anterior, body is posterior
69
stira terminalis
fiber bundle in the groove of the floor of the lateral ventricle connecting the amygdala to the hypothalamus and forebrain
70
cerebral aqueduct
connects 3rd and 4th ventricles
71
two prominences at the posterior thalamus
lateral and medial geniculate bodies
72
primary fissure of the cerebellum
divides anterior and posterior lobes
73
posterolateral fissure of the cerebellum
separates the posterior lobe from the nodulus

Neuroscience 1 (13 decks)

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