Which neurons are essential for planning and execution of voluntary movements?
A) local circuit neurons in the spinal cord
B) lower motor neurons in the brain stem
C) sensory neurons in the thalamus
D) upper motor neurons in the cortex

Question

Quizplus · Accepted Answer

Upper motor neurons in the cortex are essential for planning and execution of voluntary movements. They receive information from sensory input and then transmit this information to lower motor neurons, which then execute the desired movement through muscle contraction. Local circuit neurons in the spinal cord are responsible for reflexive movements, while lower motor neurons in the brain stem primarily control cranial nerves involved in facial expressions and other vital functions. Sensory neurons in the thalamus transmit information from the peripheral nervous system to the cortex but are not directly involved in voluntary movement planning or execution.

Which Neurons Are Essential for Planning and Execution of Voluntary