Sulci and Gyri of Cerebral Hemispheres Flashcards
What structure separates the Cerebral Hemispheres?
Longitudinal Cerebral Fissure
What structure connects the hemispheres across the midline?
Corpus Callosum
What are the parts of the Corpus Callosum?
Anterior to Posterior:
Rostrum
Genu
Body
Splenium
What are the lobes of the Cerebral Hemisphere?
Frontal Lobe
Parietal Lobe
Temporal Lobe
Occipital Lobe
Limbic Lobe
Limbic Lobe can only be viewed from the medial surface
What are the poles of the Cerebral Hemispheres?
Frontal Pole
Temporal Pole
Occipital Pole
How is the surface area of the Cerebral Hemisphere increased?
Gyri: Folds in the cortex
Sulci: Fissures separating the gyri
What are the Surfaces of the Cerebral Hemisphere?
Lateral Surface
Medial Surface
Inferior Surface
What are the major sulci of the brain?
Central Sulcus
Lateral Sulcus
Parieto-Occipital Sulcus
Calcarine Sulcus
Major Sulci
Location of Central Sulcus
Superior Border
Major Sulci
Anterior to the Central Sulcus is the …
motor cortex
Initiates the movements of the opposite side of the body
Major Sulci
Posterior to the Central Sulcus is the …
sensory cortex
Receives sensory information from opposite side of body
Major Sulci
Lateral Sulcus location
Deep cleft between Frontal Lobe and Temporal Lobe
Major Sulci
Pathway of Parieto-Occiptal Sulcus
Begins in Superomedial Border
Meets Calcarine Sulcus on Medial Surface
Major Sulci
The Parieto-Occipital Sulcus divides the Calcarine Sulcus into …
Pre-Calcarine and Post-Calcarine Sulci
Major Sulci
Pathway of Calcarine Sulcus
Begins under splenium of Corpus Callosum
Arches up and reaches Occipital Pole
Sulci and Gyri of the Frontal Lobe
Superior frontal gyrus
Superior frontal sulcus
Middle frontal gyrus
Inferior frontal sulcus
Inferior frontal gyrus
Precentral sulcus
Precentral gyrus
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Sulci and Gyri of the Parietal Lobe
Postcentral Gyrus
Postcentral Sulcus
Superior Parietal Lobule/Gyrus
Intraparietal Sulcus
Inferior Parietal Lobule/Gyrus
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Sulci and Gyri of the Temporal Lobe
Superior Temporal Gyrus
Superior Temporal Sulcus
Middle Temporal Gyrus
Inferior Temporal Sulcus
Inferior Temporal Gyrus
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Sulci and Gyri of Occipital Lobe
Superior Occipital Gyrus
Transverse Occipital Sulcus
Inferior Occipital Gyrus
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Features of the Medial Surface of Cerebrum
Corpus Callosum
Callosal Sulcus
Cingulate Gyrus
Cingulate Sulcus
Paracental Lobule
Medial Frontal Gyrus
Suprasplenial Sulcus
Precuneus
Isthmus
Parieto-Occipital Sulcus
Cuneus
Pre-Calcarine Sulcus
Post–Calcarine Sulcus
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Features of the Limbic Lobe
Cingulate gyrus
Parahippocampal gyrus
Uncus
What are the divisions of the Inferior Surface of the Cerebrum?
Anterior Orbital Part
Temporal Part
What are the features of the Orbital Part of the Cerebrum?
Gyrus Rectus
Olfactory Sulcus
Orbital Gyri (anterior, posterior, medial & lateral)
Orbital Sulcus (H-shaped)
What are the features of the Temporal Part of the Cerebrum?
Lateral Occipito-Temporal Gyrus
Occipito-Temporal Sulcus
Medial Occipito-Temporal Gyrus
Collateral Sulcus
Para-Hippocampal Gyrus: Uncus (anterior end) and Lingual Gyrus (posterior end)
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