Broadmann areas and the homunculi

Question 1

Primary somatosensory area

Answer 1

post-central gyrus. signals from the thalamus. main receptive field for sense of touch. broadman areas 3,2,1.

Question 2

somatosensory association area

Answer 2

posterior to the primary somatosensory area. integrates sensory information from the primary somato area. allows to construct an understanding of the object being felt.

Question 3

Primary motor area

Answer 3

boradmann area 4. pre-central gyrus. Inverted fashion so toe is at the top of the hemisphere and mouth is at the bottom. involved in the planning and excecution of movements.

Question 4

Pre-motor area

Answer 4

anterior to the primary motor area. Broadmann area 6. this projects directly to the spinal cord.

Question 5

orbitofrontal areas

Answer 5

the prefrontal cortex region in the frontal lobes in the brain which is involved in decision making. Broadmann area 10, 11 and 47.

Question 6

Primary, secondary and associative visual areas.

Answer 6

17, 18, 19. involved in the processing of visual information.

Question 7

Primary and associative auditory areas.

Answer 7

41, 42 and partially 22. processes auditory information.

Question 8

Broca’s area

Answer 8

Region of frontal lobe in the dominant hemisphere. it is involvedin speech production and language processing.areas 44 and 45.

Question 9

Wernicke’s area

Answer 9

involved in comprehension or understanding of written and spoken language. in superior temporal gyrus. is area 22.

Question 10

anterior and posterior cingulated gyri

Answer 10

above the corpus callosum - the limbic system.

Question 11

insular cortex

Answer 11

portion of the cerebral cortex folded deep within the lateral sulcus, involved in consciousness, emotion and homostasis.