Cerebrum Flashcards
Example of Limiting Sulcus
Central sulcus of Rolando → Separates Sensory and Motor cortex
Limiting sulcus separates
Two different functional area
Example of Axial Sulcus;
Posterior part of Calcarine sulcus in Occipital Cortex
Axial Sulcus formed in the Homogenous area
Lunate sulcus is example of
Operculated sulcus;
Operculated sulcus is similar to limiting sulcus
The lip of sulcus contain 3rd different area
Posterior part of Calcarine Sulcus is
Anterior part of Calcarine Sulcus is
Axial Sulcus
Complete Sulcus
Area 44, 45
Motor/Broca’s area of Speech
In Inferior frontal gyrus
Area 8
Frontal Eye Field
In Middle Frontal Gyrus
Area 6
Premotor Area ~ plan the movement
In Superior Frontal Gyrus
Area 4
Primary Motor Area
In Precentral Gyrus
Area 9, 10, 11, 12
Pre-Frontal Gyrus
For critical thinking and Social Behaviour
No. Of Primary Sensory Area
Area 3, 1, 2
In Postcental Gyrus
Sulcus dividing the Parietal lobe into Superior and Inferior Parietal Lobule
InterParietal Sulcus
Sensory association cortex located in
Superior Parietal Lobule
Area 5, 7
Area in the Posterior part of Superior Temporal Gyrus
Wernicke’s area
Area 22
Sensory area for Speech
Area in the Anterior part of Superior temporal gyrus
Auditory area
Area 41, 42
Also known as Heschl’s gyrus
Paracentral lobule represents
Lower limb and Perineum (urogenital and anal orifice)
Highest centre for Micturition and Defecation
Paracentral Lobule
Area 28
Olfactory Area
Function of Parahippocampal gyrus and Uncus
Olfaction, Mood and Behaviour
Part of Limbic System
Location of Insular Cortex
Floor of Lateral sulcus between Frontal and Temporal Lobe
Insular Cortex is made up of
2 Lobes;
Anterior lobe ~ Agranular layer
Posterior lobe ~ Granular later
Anterior lobe of Insular cortex
- receives fibres from which part of Thalamus ?
- provides fibres to?
From;
1. Medio - dorsal part
- Ventro - posterior part
To;
Limbic system - Olfactory cortex
Posterior lobe of Insular cortex
- receives fibres from which part of Thalamus?
- provides fibres to?
From;
1. Pulvinar part
- Ventro-posterior part
To;
Auditory cortex
Posterior lobe of Insular Cortex provides fibres to?
Auditory cortex
Anterior lobe of Insular cortex gives fibres to
Limbic System ~ Olfactory Cortex
Artery supplying Wernicke’s and Broca’s area
Middle Cerebral Artery
Entire motor cortex is supplied by
ACA - Medial Surface
MCA - Lateral Surface
Visual Cortex is Predominantly supplied by
Macular area - ?
Predominantly by - PCA
Macular Area - MCA
Areas of Representation in Motor Homunculus are dependent on
Skills
Not on the size of Organ
Broca’s area and Wernicke’s area are connected by means of
Arcuate fibres / Fasciculus
For Repetition we need which structures to be normal
Broca’s Area
Wernicke’s Area
Arcuate Fibres / Fasciculus
In Broca’s aphasia;
Fluency -
Comprehension -
Repetition-
Fluency - affected
Comprehension - Normal
Repetition - affected
In Wernicke’s aphasia;
Fluency -
Comprehension -
Repetition -
Fluency - Normal
Comprehension - affected
Repetition - affected
In Conduction aphasia; lesion in arcuate fasciculus
Fluency -
Comprehension -
Repetition -
Fluency - Normal
Comprehension - Normal
Repetition - affected
