1.3 The External Features of the Cerebral Hemisphere Flashcards
What is the name given to the large (incomplete) Fissure which separates the 2 Cerebral Hemispheres?
The Median Longitudinal Fissure
What structure connects the 2 Hemispheres?
The Corpus Callosum
What type of Nerve Fibers are carried in the Corpus Callosum?
Commissural Fibers - allowing the 2 Hemispheres to communicate with each other
The Cerebral Hemisphere (upon removal of the Skull Cap and Encasing Meninges) covers all of the Cranial Cavity except which part?
The Posterior Cranial Fossa, due to this being where the Brainstem and Cerebellum are placed
What separated the Cerebral Hemispheres from the Cerebellum?
The Tentorum Cerebelli
What is the Tentorum Cerebelli?
A Fold of Dura Matter
What are the 4 lobes of the Brain?
- The Frontal Lobe
- The Parietal Lobe
- The Temporal Lobe
- The Occipital Lobe
These are all named after the Bones they are found underneath
What separates the Frontal and the Temporal Lobes?
The Lateral (Sylvian) Sulcus
What separates the Frontal and the Parietal Lobes?
The Central Sulcus
What separates the Parietal and Occiptal Lobes?
The Parieto-Occipital Sulcus
What separates the Parietal and Temporal Lobes?
Nothing, they meet at the Temporoparietal Junction
What does the Calcarine Sulcus Separate?
It divides the Visual Cortex into 2:
- The Primary Visual Cortex (Area 17)
- The Visual Association Area (Area 18/19)
Which lobe contains the Primary Motor Cortex?
The Frontal Lobe (Area 4)
Which lobe contains the Primary Sensory Cortex?
The Parietal Lobe (Area 3, 1, and 2)
Which lobe contains the Primary Visual Cortex?
The Occipital Lobe (Area 17)
