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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
Q

the caudal most point of the 4th ventricle

A

obex

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26
Q

longitudinal running grooves on the floor of the 4th ventricle

A

sulcus limitans

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27
Q

hypoglossal and vagal trigones

A

cranial nerve nuclei visible on the dorsal medulla superior to the obex and gracile

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28
Q

facial colliculus

A

continusous w/ hypoglossal and vagal trigones, but superior. found above the striae medullares

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29
Q

the junction between rostral dorsal medulla and pons

A

striae medullares

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30
Q

vestibular area

A

lateral to the sulcus limitans in the 4th ventricle

31
Q

corpora quadrigemina

A

found on posterior midbrain, superior and inferior colliculi

32
Q

brachium of the colliculi

A

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
Q

structure found immediately dorsal to the superior colliculi

A

pineal gland

34
Q

what structures separate the 4 lobes

A

sylvian fissure, central sulcus, parieto-occipital sulcus

35
Q

area of the brain responsible for motor movement

A

precentral gyrus of the frontal lobe

36
Q

area of the brain responsible for sensation

A

postcentral gyrus of the parietal lobe

37
Q

precentral sulcus

A

sulcus immediately anterior to precentral gyrus

38
Q

postcentral sulcus

A

sulcus immediately posterior to postcentral gyrus

39
Q

describe the divisions of the frontal lobe

A

superior, middle, and inferior frontal gyri

40
Q

what are the divisions of the inferior frontal gyrus?

A

opercular- brocas area in dominant hemisphere, most dorsal

triangular- middle area, triangle pointing at temporal tip

orbital- closes to eyes

41
Q

straight gyrus

A

inferior surface of ventral frontal lobe, most medial gyrus

42
Q

olfactory sulcus

A

immediately lateral to straight gyrus, the olfactory bulb runs here

43
Q

orbital frontal gyri

A

immediately lateral of olfactory sulcus

44
Q

medial and lateral stria of the olfactory bulb

A

olfactory bulb splits medially and laterally

45
Q

describe structures on the lateral temporal lobe

A

divided into an inferior, middle, and superior temporal gyri

46
Q

angular gyrus

A

posterior to the lateral fissure

47
Q

gyrus that caps the lateral fissure

A

supramarginal gyrus

48
Q

sulci running into center of brain on anterior temporal surface

A

transverse gyri of heschl

49
Q

area that becomes visible when lateral fissure is opened

50
Q

parahippocampal gyrus

A

most medial gyrus on inferior temporal lobe

51
Q

hippocampal sulcus

A

space medial to parahippocampal gyrus

52
Q

collateral sulcus

A

sulcus immediately lateral to parahippocampal gyrus

53
Q

uncus

A

medial swelling on rostral parahippocampal gyrus

54
Q

corpus callosum

A

large connection between the two cerebral hemispheres

55
Q

rostrum, genu, body and splenium

A

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
Q

gyrus following the dorsal aspect of the corpus callosum

A

cingulate gyrus

57
Q

gyrus that is in contact w/ the rostrum of the corpus callosum

A

subcallosal gyrus

58
Q

calcarine sulcus

A

sulcus w/in occipital lobe that meets parieto-occipital sulcus and divides the visual areas

59
Q

septum pellucidum

A

membrane that separates the two lateral ventricles

60
Q

fornix

A

c-shaped white matter tract that follows the course lateral ventricles. runs from hippocampus to hypothalamus

61
Q

anterior commissure

A

tract that connects the two temporal lobes found at the dorsal lamina terminalis

62
Q

hypothalamic sulcus

A

divides thalamus and hypothalamus

63
Q

connection between the two thalami

A

thalamic adhesion

64
Q

habenula

A

paired nuclei located at the end of the stria medullaris thalami. connected posteriorly to the pineal gland

65
Q

stria medullaris thalami

A

ridge along dorsal thalamus w/ neurons connecting amygdala and habenula

66
Q

what must CSF pass through if it is to go from the lateral ventricles to the 3rd ventricle

A

foramen of monroe (ventral to fornix)

67
Q

choroid plexus

A

specialized epithelium that produces CSF

68
Q

prominent bulge on the floor of the lateral ventricle

A

caudate nucleus. head of the caudate is anterior, body is posterior

69
Q

stira terminalis

A

fiber bundle in the groove of the floor of the lateral ventricle connecting the amygdala to the hypothalamus and forebrain

70
Q

cerebral aqueduct

A

connects 3rd and 4th ventricles

71
Q

two prominences at the posterior thalamus

A

lateral and medial geniculate bodies

72
Q

primary fissure of the cerebellum

A

divides anterior and posterior lobes

73
Q

posterolateral fissure of the cerebellum

A

separates the posterior lobe from the nodulus

Neuroscience 1 (13 decks)

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