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[OS 202] Lecture Exam A > Cerebrum > Flashcards

Cerebrum Flashcards

1
Q

Origin of the Cerebrum

A

Telencephalon

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2
Q

Fate of the basal portion of the Telencephalon?

A

Become enveloped becoming islands of grey matter in the subcortex (basal ganglia)

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3
Q

Why is the outer and inner layer of different colors?

A

Gray matter is unmyelinated

White matter is myelinated

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4
Q

Neuronal organization is described as being?

A

Columnar

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5
Q

Asymmetry in fiber size exists, which hemisphere has thicker fibers?

A

Left Cerebral Hemisphere, dealing with language

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6
Q

External Surface of the Cerebrum is broken up into?

A

Convolutions/Gyri and Grooves/Fissures/Sulci

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7
Q

What separates the frontal and parietal lobes?

A

Central Sulcus (Fissure of Rolando)

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8
Q

Precentral gyrus is bounded inferiorly by?

A

Sylvian Fissure

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9
Q

What separates the frontal and parietal lobes from the temporal lobe?

A

Sylvian Fissure

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10
Q

3 Components of the Inferior Frontal Gyrus

A

Pars Opercularis
Pars Triangularis
Pars Orbicularis

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11
Q

Two parts of the inferior parietal gyrus?

A

Angular Gyrus

Supramarginal Gyrus

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12
Q

Boundaries of the Superior Temporal Gyrus?

A

Anteriorly: Sylvian Fissure
Posteriorly: Superior Temporal Sulcus

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13
Q

Cingulate gyrus is bounded above by? Below by?

A

Above: Cingulate Sulcus
Below: Corpus Callosum

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14
Q

Name of the Inner Surface of the Superior Temporal Lobule?

A

Transverse Temporal Gyri of Heschl

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15
Q

Types of Connecting Fibers in the Cerebrum

A
  1. Projection
  2. Commissural
  3. Association
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16
Q

Function: Projection Fibers

A

Connect brain with rest of CNS

17
Q

Function: Commissural Fibers

A

Connect the two cerebral hemispheres

18
Q

Function: Association Fibers

A

Connect different parts within the same cerebral hemisphere

19
Q

Anterior fibers of the Anterior Commissure connect?

A

Olfactory Bulb and Nuclei

20
Q

Posterior fibers of the Anterior Commissure connect?

A

Middle and Inferior Temporal Gyri

21
Q

Where is the Posterior Commissure found?

A

Diencephalon/Brainstem

22
Q

Function: Posterior Commissure

A

Interconnects the pretectal nuclei

23
Q

Function: Basal Optic Nucleus of Meynert

A

Contains cholinergic neurons that project to the neocortex

[OS 202] Lecture Exam A (14 decks)

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