Question

What component of the nervous system regulates voluntary muscle responses to external stimuli?

-Frontal lobe
-Parietal lobe
-Occipital lobe
-Temporal lobe

Answer 1

Someone else already answered this question on open study: http://openstudy.com/study#/updates/4f7238cbe4b07738f5ae38a0

The answer is A. Frontal Lobe.

Answer 2

The upper motor neurons in the cerebral cortex reside in several adjacent and highly interconnected areas in the frontal lobe, which together mediate the planning and initiation of complex temporal sequences of voluntary movements.

These cortical areas all receive regulatory input from the basal ganglia and cerebellum via relays in the ventrolateral thalamus , as well as inputs from the somatic sensory regions of the parietal lobe (see . Although the phrase “motor cortex” is sometimes used to refer to these frontal areas collectively, more commonly it is restricted to the primary motor cortex, which is located in the precentral gyrus . The primary motor cortex can be distinguished from the adjacent “premotor” areas both cytoarchitectonically (it is area 4 in Brodmann's nomenclature) and by the low intensity of current necessary to elicit movements by electrical stimulation in this region. The low threshold for eliciting movements is an indicator of a relatively large and direct pathway from the primary area to the lower motor neurons of the brainstem and spinal cord.

Answer 3

thanks you guys :)

Answer 4

not frontal lobe..

Answer 5

@ganeshie8 @Compassionate

Answer 6

@iambatman

Answer 7

the answer is B