Cerebrum Flashcards
Origin of the Cerebrum
Telencephalon
Fate of the basal portion of the Telencephalon?
Become enveloped becoming islands of grey matter in the subcortex (basal ganglia)
Why is the outer and inner layer of different colors?
Gray matter is unmyelinated
White matter is myelinated
Neuronal organization is described as being?
Columnar
Asymmetry in fiber size exists, which hemisphere has thicker fibers?
Left Cerebral Hemisphere, dealing with language
External Surface of the Cerebrum is broken up into?
Convolutions/Gyri and Grooves/Fissures/Sulci
What separates the frontal and parietal lobes?
Central Sulcus (Fissure of Rolando)
Precentral gyrus is bounded inferiorly by?
Sylvian Fissure
What separates the frontal and parietal lobes from the temporal lobe?
Sylvian Fissure
3 Components of the Inferior Frontal Gyrus
Pars Opercularis
Pars Triangularis
Pars Orbicularis
Two parts of the inferior parietal gyrus?
Angular Gyrus
Supramarginal Gyrus
Boundaries of the Superior Temporal Gyrus?
Anteriorly: Sylvian Fissure
Posteriorly: Superior Temporal Sulcus
Cingulate gyrus is bounded above by? Below by?
Above: Cingulate Sulcus
Below: Corpus Callosum
Name of the Inner Surface of the Superior Temporal Lobule?
Transverse Temporal Gyri of Heschl
Types of Connecting Fibers in the Cerebrum
- Projection
- Commissural
- Association