cerebral cortex

Question 1

four lobes of cerebral hemisphere?

Answer 1

frontal, temporal, parietal, occipital

Question 2

what divides the frontal and parietal lobes?

Answer 2

central sulcus

Question 3

function of each cerebral hemisphere?

Answer 3

primarily control or receive info from contralateral body

Question 4

what connects the two brains?

Answer 4

corpus callosum

Question 5

what subdivides lobes and what are the fissures named that create these subdivisions?

Answer 5

gyri by fissures names sulci

Question 6

what are Broadmann’s areas?

Answer 6

52 cortical divisions presenting with different histological layouts

Question 7

homunculus

Answer 7

representation of the cortical areas dedicated to processing info from particular part of body

Question 8

what does motor homunculus refer to?

Answer 8

precentral gyrus and anterior paracentral lobe

Question 9

what is the primary motor cortex?

Answer 9

broadmann’s area 4

Question 10

area anterior to precentral gyrus?

Answer 10

premotor and supplementary motor cortex (Broadmann’s 6) w motor preparation and programming

Question 11

prefrontal cortex?

Answer 11

anterior and inferior portion of frontal lobe. motor integration and planning, congnirtion, judgement, and impulse control

Question 12

Broca’a area?

Answer 12

on dominant hemisphere in posterior portion of inferior frontal gyrus. controls language production.

Question 13

lesion to broca’s area?

Answer 13

expressive aphasia characterized by non-fluent speech, impaired repetition, mostly preserved language comprehension

Question 14

Wernicke’s area?

Answer 14

posterior portion of superior temporal gyrus. with supramarginal and angular gyrus on dominant hemisphere concerned with language comprehension

Question 15

lesion to Wernicke’s area and/or inferior parietal lobule on dominant hemisphere?

Answer 15

aphasia (repetitive) characterized by fluent speech with impaired repetition and comprehension

Question 16

posterior parietal assocation areas?

Answer 16

receive visual, auditory, and limbic inputs concerning three-dimensional perception

Question 17

lesion of posterior parietal assocation on right (non dominant hemisphere) results in?

Answer 17

astereognosis, personal neglect syndrome, spatial neglect syndrome

Question 18

astereognosis

Answer 18

inability to recognize three dimensional objects by touch

Question 19

personal neglect syndrome?

Answer 19

ignoring left side of one’s body. often accompanied by anosognosia

Question 20

spatial neglect syndrome

Answer 20

ignoring left visual field

Question 21

lesion of posterior parietal assocation areas on left results in what?

Answer 21

sensory language deficits such as Gerstman syndrome.

Question 22

Gertsman syndrome

Answer 22

left angular gyrus affected. results in acalculia, agraphia, right-left disorientation, and finger agnosia

Question 23

lesion to occipital lobe?

Answer 23

anopsia

Question 24

occipital lobe consists of what?

Answer 24

primary and assocation visual cortices (areas 17, 18, 19). cuneus and lingual gyri.