Cerebral Cortex II

Question 1

Anterior nuclear group
Afferent input:
Cortical areas
Function

Answer 1

Afferent input: mammillary body
Cortical areas: Cingulate gyrus
Function: limbic

Question 2

Ventral Anterior (VA)
Afferent input:
Cortical areas
Function

Answer 2

Afferent input: GP
Cortical areas: Area 6
Function: motor

Question 3

Ventral Lateral (VL)
Afferent input:
Cortical areas:
Function:

Answer 3

Afferent input: Dentate nucleus
Cortical areas: Area 4 and 6
Function: Motor

Question 4

Ventroposterolateral (VPL)
Afferent input:
Cortical areas
Function

Answer 4

Afferent input: Dorsal column-medial Leminscus and spinothalmic
Cortical areas: area 3, 1, 2
Function: Somatosensory (body)

Question 5

Ventroposteromedial (VPM)
Afferent input:
Cortical areas:
Function:

Answer 5

Afferent input: Trigeminal nucleus
Cortical areas: Area 3, 1, 2
Function: somatosensory ~ body

Question 6

Lateral Geniculate (LGN)
Afferent input:
Cortical areas:
Function:

Answer 6

Afferent input: retina
Cortical areas: area 17
Function: vision

Question 7

Medial Geniculate (MGN)
Afferent input:
Cortical areas:
Function:

Answer 7

Afferent input: inferior colliculus
Cortical areas: Area 41 and 42
Function: Audition

Question 8

Lateral Dorsal (LD)
Afferent input:
Cortical areas:
Function:

Answer 8

Afferent input: cingulate gyrus
Cortical areas: cingulate gryus
Function: emotional expression

Question 9

Lateral Posterior (LP)
Afferent input:
Cortical areas
Function

Answer 9

Afferent input: Parietal cortex
Cortical areas: parietal cortex
Function: sensory integration

Question 10

Pulvinar (Pul)
Afferent input:
Cortical areas
Function

Answer 10

Afferent input: Superior colliculus, parietal/occipital/temporal lobe
Cortical areas: POT cortex
Function: sensory integration

Question 11

Medial Dorsal
Afferent input:
Cortical areas:
Function:

Answer 11

Afferent input: amygdala, olfactory, hypothal
Cortical areas: prefrontal cortex
Function: limbic, executive

Question 12

Cortico-cortical connections within the same hemisphere and between the two hemispheres

Answer 12

Short association fibers, long association fibers, callosal fibers

Question 13

General functions of cerebral cortex

Answer 13

perception of special sensations: somatic, visual, auditory, olfaction
planning and execution of voluntary movements
emotions and behavior
mental funcitoning
memory

Question 14

Dysfunction to cortex is usually caused by

Answer 14

vascular hemorrhage, thrombosis, or tumor

Question 15

Cerebral cortex tumor is usually of

Answer 15

glial origin

Question 16

Lesion of primary motor cortex:

Answer 16

Contralateral paralysis

Question 17

Lesion of primary sensory cortex:

Answer 17

Contralateral loss of somatic sensation.

Question 18

Lesion of primary visual cortex:

Answer 18

Contralateral hemianopia.

Question 19

Lesion of the supramarginal gyrus (area 40):

Answer 19

astereognosis

Question 20

Lesion of the angular gyrus (area 39):

Answer 20

alexia and agraphia

Question 21

Lesion of the Broca’s area (44 and 45) on the dominant hemisphere:

Answer 21

motor aphasia