02 Cerebrum Flashcards Preview

11 Neurology > 02 Cerebrum > Flashcards

Flashcards in 02 Cerebrum Deck (50):
1

Appears grayish in preserved brains
Comprised of cell bodies of neurons and unmyelinated axons

Outer layer/gray matter

2

Appears relatively lighter
Comprised of myelinated axons

Inner layer/white matter

3

Most prominent sulcus that separates the cerebrum into the right and left cerebral hemispheres

Median longitudinal fissure

4

Separates the frontal and parietal loves

Central sulcus of rolando

5

Bounded anteriorly by the precentral sulcus and inferiorly by the Sylvian fissure

Precentral gyrus

6

Separates the frontal and parietal lobes from the temporal lobe

Sylvian fissure

7

Bound superiorly by inferior frontal sulcus, anterior by the anterior ascening ramus, posteriorly by the precentral sulcus

Pars opercularis

8

Divided into halves by the diagonal sulcus

Inferior frontal gyrus

9

Largest part and lies above the orbits

Pars orbicularis

10

Apex of pars triangularis

Anterior sylvian point

11

Most medial gyrus of the frontal lobe
Continuous with the superior frontal gyrus in the medial surface
Bounded laterally by the olfactory sulcus and by the longitudinal fissure medially

Straight gyrus

12

Rests above the orbits of the eyes divided by the orbital sulci into medial and lateral orbital gyri

Orbital gyri

13

Bounded anteriorly by the central sulcus, posteriorly by the postcentral sulcus

Postcentral gyrus

14

Separated from the inferior parietal lobule by the intraparietal sulcus
Important for visual tracking

Superior parietal lobule

15

Composed of the supramarginal gyrus and the angular gyrus

Inferior parietal lobule

16

Caps the sylvian fissure
Follow the sylvian fissure to locate it

Supramarginal gyrus

17

Caps the superior temporal sulcus

Angular gyrus

18

Separates the parietal lobe from occipital lobe

Parieto-occipital sulcus

19

Area between the parieto-occipital sulcus and the subparietal fissure

Precuneus

20

Bounded anteriorly by the sylvian fissure and posteriorly by the superior temporal sulcus

Superior temporal gyrus

21

Bounded anteriorly by the superior temporal sulcus and posteriorly by the inferior temporal sulcus

Middle temporal gyrus

22

Bounded superiorly by the inferior temporal sulcus and medially by the occito-temporal sulcus

Inferior temporal gyrus

23

Bounded laterally by the occipito-temporal sulcus and medially by the collateral sulcus

Fusiform gyrus

24

Bounded laterally by the posterior portion of the collateral sulcus and medially by the calcarine fissure

Lingual gyrus

25

Most medial portion of the temporal lobe
Anterior portion is recurved into the form of a hok

Parahippocampal gyrus

26

Separates the parietal lobe from the occipital lobe

Parieto-occipital sulcus

27

Horizontal sulcus that subdivides the occipital lobe, joins the parieto-occipital fissure

Calcarine fissure

28

Wedge-shaped area between the parieto-occipital sulcus and the calcarine fissure

Cuneus

29

Medial part of the brain, limited above by the cingulated sulcus and below the corpus callosum

Cingulate gyrus

30

Posteromedial portion of the superior frontal gyrus
Continuous with both precentral and postcentral gyri

Paracentral lobule

31

Lies within the Sylvian fissure and is covered by the opercula of the frontal, parietal, and temporal lobes
Houses the basal ganglion

Insular cortex (Island of rell)

32

Inner surface of the superior temporal gyrus

Transverse temporal gyri (of heschl)

33

Three types of connecting fibers

Projection fibers
Commissural fibers
Associated fibers

34

Connect the brain with rest of the CNS

Projection fibers

35

Projection fibers are afferents carrying information to the cerebral cortex, and efferents carrying information from it

Corona radiata

36

The projection fibers that make up the corona radiata also radiate out of the brain stem via the internal capsule

Internal capsule

37

Maintains fibers coming from the thalamus, then from the brain going to the brain stem

Anterior limb

38

Superior-inferiorly directed fibers
Includes the corticospinal tract, corticobulbar fibers and corticopontine fibers

Posterior limb

39

Contains optic radiation

Retilenticular portion

40

Connect the two cerebral hemispheres

Commissural fibers

41

Connects two temporal lobes together

Anteior commissure

42

Structurally found in the diencephalon
Interconnects the pretectal nuclei

Posterior commissure

43

Connect different parts within the same cerebral hemisphere

Associated fibers

44

Ring of white matter connecting anterior and posterior portions of the brain

Cingulum

45

Wraps the corpus callosum from below

Superior occipitofrontal fasciculus

46

Connects the occipital and frontal lobes but lies much more inferior compared to the occipitofrontal fasciculus
Lies beneath the insula, passing inferolateral to the claustrum

Inferior occipitofrontal fasciculus

47

Hooks around the Sylvian fissure
Connects the orbital and inferior frontal gyri with the anterior temporal lobe

Uncinate fasciculus

48

Massive bundle of fibers sweeping along the superior margin of the insula in a great arc
Largest of the association fibers
Connects frontal lobe to the parietal, temporal, and occipital cortices

Superior longitudinal fasciculus

49

Connects the areas of the brain concerned with the production and understanding of language

Arcuate fasciculus

50

Connects the occipital and temporal cortices

Inferior longitudinal fasciculus