Cerebral hemispheres Flashcards
Examples of cortical signs
Aphasia(dominant hemisphere), neglect (non-dominant hemisphere), eye deviation, agnosia, apraxia, frontal release signs
What is the arcuate fasiculus
Clinical correlate
A small pathway that is a part of the superior longitudinal fasiculus in the dominant hemisphere that connects language areas with each other. Lesions of this result in conduction aphasia
Functions of the cingulum, and where ate the cell bodies of origin
The cell bodies of origin are the cingulate gyrus and it they are part of the limbic system and play a part in emotional behavior and the default mode network
If you can see the 3rd ventricle in a frontal/coronal plane where are you
At the level of the posterior limb of the internal capsule
Where do corticobulbar axons travel in the internal capsule
The genu
What type of information travels in the posterior limb of the internal capsule
Descending corticospinal axons and scending somatosensory axons front he VPL/VPM
What travels in the anterior limb of the internal capsule
Auditory and visual radiations
What is the caudate nucleus and where does it lie
It is part of the extrapyramidal motor system and it lies in the floor of the anterior horn of the lateral ventricle
What is the putamen and what is its function
It is part of the extrapyramidal motor system and it is the lateral most of the structures at the level of the insula
What is the globus pallidus and where does it lie
It is located medial to and “connected to the putamen and is art of the extrapyramidal motor system
What structures make u the corpus striatum
Caudate, putamen, globus pallidus
What structures make up the neostriatum or striatum
The caudate and putamen
What structures make up the lentiform nucleus
The putamen and globus pallidus
What is the amygdala and where does it lie
It lies beneath the cortex of the temporal pole and it is important in innate, learned fear, and emotional memory
Describe the organization of the thalamic nuclei
Anterior and medial structures are limbic
Medial and slightly posterior to the limbic is motor
Lateral and posterior are sensory
