The left hemisphere language network involves white matter tracks connecting the temporal and frontal lobes. One dorsal track connects the posterior temporal cortex and the lateral inferior frontal cortex, and is call the , while the other ventral track connects more anterior and medial temporal cortex with the inferior and orbital frontal cortex, and is called the

Question:

The left hemisphere language network involves white matter tracks connecting the temporal and frontal lobes. One dorsal track connects the posterior temporal cortex and the lateral inferior frontal cortex, and is call the , while the other ventral track connects more anterior and medial temporal cortex with the inferior and orbital frontal cortex, and is called the .

a. optic chiasm/centre median

b. trigeminal nerve/optic nerve

c.corpus callosum/fornix

d. arcuate fasciculus/uncinate fasciculus

The Answer is D.

Explanation:

The arcuate fasciculus (Latin: curved bundle) is a bundle of axons that connects Broca's area and Wernicke's area in the brain .

It is an association fiber tract connecting caudal temporal cortex and inferior frontal lobe.

The role of the arcuate fasciculus relates to the linguistic ability of one. It's' function in language use is best represented by Conduction Aphasia.

Conduction Aphasia refers to a condition caused by damage to the inferior parietal lobule that extends into the subcortical white matter and damages the arcuate fasciculus. This type of aphasia inhibits the patient from repeating unfamiliar sounds.

The uncinate fasciculus  is a hook-shaped bundle of axons that connects the anterior portions of the temporal lobe with the inferior frontal gyrus and the lower surfaces of the frontal lobe.

The arcuate plays a key role in the left hemisphere in language processing and in the right hemisphere in visuospatial processing and some aspects of language processing, such as prosody and semantics.

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