What are the nerves that conduct signals away from the brain or spinal cord called?

The nerves that conduct signals away from the brain or spinal cord are referred to as efferent nerves. These nerves are responsible for transmitting motor commands from the central nervous system to the muscles and glands throughout the body. Efferent pathways enable the body to respond to stimuli and perform voluntary movements.

Understanding the role of efferent nerves is crucial in the context of local anesthesia because the administration of local anesthetics primarily targets these pathways to block signals from reaching the muscles, thereby preventing them from contracting during procedures. This is essential in dental practices and other medical interventions where control over pain and movement is necessary for patient comfort and safety.