Question

which of the following is the best description of the function of region b? a lateral view of the left cerebrum with selected functional areas highlighted. letter 'a' indicates an anterior part of the brain. letter b indicates a small part running vertically from the middle of the superior part. letter c indicates a groove between the part labeled letter b and a part posterior to it. letter d indicates a small posterior part of the brain. letter e indicates two small areas on the lateral side of the brain. the areas are located anteriorly and posteriorly to the part labeled b. region b contains neurons receiving somatosensory input from the thalamus. region b is responsible for learning, working memory, judgement, reasoning, persistence, and planning. region b coordinates the movement of several muscle groups into complex tasks. region b includes neurons whose axons carry motor commands from the cerebrum.

Answer 1

Region B most likely corresponds to the primary motor cortex responsible for controlling voluntary muscle movements. Adjacent areas participate in movement planning, while the prefrontal cortex handles cognitive tasks.

Step-by-step explanation:

Region B, as it runs vertically from the middle of the superior part of the cerebrum, likely corresponds to the primary motor cortex located in the precentral gyrus of the frontal lobe. The function of this area is to control voluntary muscle movements by sending signals through the upper motor neurons to the spinal cord and onto skeletal muscles. Adjacent to the primary motor cortex are areas like the premotor cortex and frontal eye fields which are involved in planning movements and controlling eye movements, respectively. Moreover, the prefrontal cortex, also located in the frontal lobe but anterior to these regions, is fundamental for cognitive functions such as planning, reasoning, memory, and personality aspects - all higher-order executive functions.