Wednesday, 4-27-Cerebral Hemispheres (Stephens)

Question 1

The development of the ___ allowed the lateralization of a specific function to reside in 1 hemisphere yet still share its information with the other side

Answer 1

Corpus callosum

Question 2

What are the Brodmann areas of the primary somesthetic cx?

Answer 2

3, 1, 2

Question 3

What are the Brodmann areas of the primary auditory cx?

Answer 3

41, 32

Question 4

What are the Brodmann areas of the primary visual cx?

Answer 4

17

Question 5

What are the Brodmann areas of the brocas speech area? Wernickes?

Answer 5

Brocas=44, 45

Wernicke=22

Question 6

What are the Brodmann areas of the primary motor cx? Premotor area?

Answer 6

Primary motor=4

Premotor=6, 8

Question 7

What are the majority (99%) of afferents going into layers III and IV in the cerebral cortex?

Answer 7

Corticocortical fibers

Question 8

___ interconnects the frontal, parietal, and occipital lobes and is a critical link for the language association areas

Answer 8

Superior longitudinal fasciculus

Question 9

Lesions of the __ result in conduction aphasia

Answer 9

Superior longitudinal fasciculus

Question 10

__ interconnects the septal area, cingulate, and parahippocampal gyri to the entorhinal cortex.

Answer 10

Cingulum

Question 11

The __ interconnects the base of the association areas of the frontal lobe to the inferior temporal lobe

Answer 11

Uncinate fasciculus

Question 12

Where do the majority (80%) of strokes occur?

Answer 12

Internal capsule and basal ganglia

Question 13

Where are corticobulbar fibers (LMN of CN’s) found in the internal capsule?

Answer 13

Genu

Question 14

Where are corticospinal fibers (LMN, intermediate gray of SC) and somesthetic fibers found in the internal capsule?

Answer 14

Posterior limb

Question 15

Where are retrolenticular fibers found?

Answer 15

Optic radiations

Question 16

What is the blood supply of Broca’s, wernicke’s, and auditory areas of the brain?

Answer 16

MCA

Question 17

What is the main blood supply to the primary visual cx?

Answer 17

PCA

Question 18

___ occlusions may result in sensory and/or motor deficits in the contralateral upper limb and head

Answer 18

MCA

Question 19

__ occlusions may result in contralateral homonymous hemianopia

Answer 19

PCA

Question 20

__ is due to a lesion of the dominant parietal lobe. It is characterized by finger agnosia, right-left disorientation, dysgraphia, and dyscalculia

Answer 20

Gerstmann syndrome

Question 21

The upward shifting of cortical areas is called ___

Answer 21

Encephalization