MRCP UK EXAMINATIONS

NEUROLOGY

SURGERY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Voluntary muscle control is governed by a vertical band of “motor cortex” located in the ____ lobe.
A
thalamus
B
pituitary
C
hypothalamus
D
frontal
Explanation: 

Detailed explanation-1: -One of the brain areas most involved in controlling these voluntary movements is the motor cortex. The motor cortex is located in the rear portion of the frontal lobe, just before the central sulcus (furrow) that separates the frontal lobe from the parietal lobe.

Detailed explanation-2: -The frontal lobes are the largest of the four lobes responsible for many different functions. These include motor skills such as voluntary movement, speech, intellectual and behavioral functions.

Detailed explanation-3: -The primary motor cortex is located in the precentral gyrus; the premotor area is more rostral. The pyramidal cells of cortical layer V (also called Betz cells) are the upper motor neurons of the primary motor cortex.

There is 1 question to complete.