Cerebrum Flashcards Preview

[OS 202] Lecture Exam A > Cerebrum > Flashcards

Flashcards in Cerebrum Deck (23):
1

Origin of the Cerebrum

Telencephalon

2

Fate of the basal portion of the Telencephalon?

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

3

Why is the outer and inner layer of different colors?

Gray matter is unmyelinated
White matter is myelinated

4

Neuronal organization is described as being?

Columnar

5

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

Left Cerebral Hemisphere, dealing with language

6

External Surface of the Cerebrum is broken up into?

Convolutions/Gyri and Grooves/Fissures/Sulci

7

What separates the frontal and parietal lobes?

Central Sulcus (Fissure of Rolando)

8

Precentral gyrus is bounded inferiorly by?

Sylvian Fissure

9

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

Sylvian Fissure

10

3 Components of the Inferior Frontal Gyrus

Pars Opercularis
Pars Triangularis
Pars Orbicularis

11

Two parts of the inferior parietal gyrus?

Angular Gyrus
Supramarginal Gyrus

12

Boundaries of the Superior Temporal Gyrus?

Anteriorly: Sylvian Fissure
Posteriorly: Superior Temporal Sulcus

13

Cingulate gyrus is bounded above by? Below by?

Above: Cingulate Sulcus
Below: Corpus Callosum

14

Name of the Inner Surface of the Superior Temporal Lobule?

Transverse Temporal Gyri of Heschl

15

Types of Connecting Fibers in the Cerebrum

1. Projection
2. Commissural
3. Association

16

Function: Projection Fibers

Connect brain with rest of CNS

17

Function: Commissural Fibers

Connect the two cerebral hemispheres

18

Function: Association Fibers

Connect different parts within the same cerebral hemisphere

19

Anterior fibers of the Anterior Commissure connect?

Olfactory Bulb and Nuclei

20

Posterior fibers of the Anterior Commissure connect?

Middle and Inferior Temporal Gyri

21

Where is the Posterior Commissure found?

Diencephalon/Brainstem

22

Function: Posterior Commissure

Interconnects the pretectal nuclei

23

Function: Basal Optic Nucleus of Meynert

Contains cholinergic neurons that project to the neocortex