Which type of neuron is responsible for transmitting impulses from the CNS to muscles?

Motor neurons are specifically responsible for transmitting impulses from the central nervous system (CNS) to the muscles. They play a crucial role in initiating muscle contractions by carrying signals that direct muscle fibers to contract or relax. This process allows for voluntary movements, such as walking or picking up objects, as well as involuntary movements like reflexes.

Motor neurons are essential for the functioning of the neuromuscular system, where they synapse directly with muscle cells at the neuromuscular junction. Upon receiving signals from the CNS, these neurons release neurotransmitters that stimulate muscle fibers, leading to coordinated movement.

The other types of neurons have distinct roles: sensory neurons transmit signals from sensory receptors to the CNS, intermediaries help process information within the CNS, and reflex neurons are involved in the automatic response to stimuli, which may include motor neuron involvement but are not specifically defined as those that carry commands from the CNS to muscles. Understanding the role of motor neurons emphasizes their significance in movement and muscle control, both voluntary and involuntary.