Sulci and Gyri of Cerebral Hemispheres Flashcards by John Jonah Jameson Jr.

Q

What structure separates the Cerebral Hemispheres?

A

Longitudinal Cerebral Fissure

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Q

What structure connects the hemispheres across the midline?

A

Corpus Callosum

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Q

What are the parts of the Corpus Callosum?

A

Anterior to Posterior:
Rostrum
Genu
Body
Splenium

Medial View of Brain

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Q

What are the lobes of the Cerebral Hemisphere?

A

Frontal Lobe
Parietal Lobe
Temporal Lobe
Occipital Lobe
Limbic Lobe

Limbic Lobe can only be viewed from the medial surface

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Q

What are the poles of the Cerebral Hemispheres?

A

Frontal Pole
Temporal Pole
Occipital Pole

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Q

How is the surface area of the Cerebral Hemisphere increased?

A

Gyri: Folds in the cortex
Sulci: Fissures separating the gyri

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Q

What are the Surfaces of the Cerebral Hemisphere?

A

Lateral Surface
Medial Surface
Inferior Surface

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Q

What are the major sulci of the brain?

A

Central Sulcus
Lateral Sulcus
Parieto-Occipital Sulcus
Calcarine Sulcus

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Q

Major Sulci
Location of Central Sulcus

A

Superior Border

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Q

Major Sulci
Anterior to the Central Sulcus is the …

A

motor cortex

Initiates the movements of the opposite side of the body

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Q

Major Sulci
Posterior to the Central Sulcus is the …

A

sensory cortex

Receives sensory information from opposite side of body

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Q

Major Sulci
Lateral Sulcus location

A

Deep cleft between Frontal Lobe and Temporal Lobe

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Q

Major Sulci
Pathway of Parieto-Occiptal Sulcus

A

Begins in Superomedial Border
Meets Calcarine Sulcus on Medial Surface

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Q

Major Sulci
The Parieto-Occipital Sulcus divides the Calcarine Sulcus into …

A

Pre-Calcarine and Post-Calcarine Sulci

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Q

Major Sulci
Pathway of Calcarine Sulcus

A

Begins under splenium of Corpus Callosum
Arches up and reaches Occipital Pole

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Q

Sulci and Gyri of the Frontal Lobe

A

Superior frontal gyrus
Superior frontal sulcus
Middle frontal gyrus
Inferior frontal sulcus
Inferior frontal gyrus
Precentral sulcus
Precentral gyrus

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Q

Sulci and Gyri of the Parietal Lobe

A

Postcentral Gyrus
Postcentral Sulcus
Superior Parietal Lobule/Gyrus
Intraparietal Sulcus
Inferior Parietal Lobule/Gyrus

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Q

Sulci and Gyri of the Temporal Lobe

A

Superior Temporal Gyrus
Superior Temporal Sulcus
Middle Temporal Gyrus
Inferior Temporal Sulcus
Inferior Temporal Gyrus

Q

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Q

Sulci and Gyri of Occipital Lobe

A

Superior Occipital Gyrus
Transverse Occipital Sulcus
Inferior Occipital Gyrus

Q

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Q

Features of the Medial Surface of Cerebrum

A

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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