Which type of neuron relays sensory information to motor nerves and glands in the spinal cord?

Which type of neuron relays sensory information to motor nerves and glands in the spinal cord?

• A. Connector neurons
• B. Sensory neurons
• C. Motor neurons
• D. Interneurons

Answer: (A)

The main idea here is a bridge-building neuron within the spinal cord. These neurons take the signals that arrive from sensory neurons and pass them along to the neurons that trigger actions—motor neurons that contract muscles—and to autonomic pathways that control glands. In practice, sensory input is carried into the spinal cord by sensory neurons, but the actual relay and decision about what response to trigger happen in these relay, or connector, neurons. They integrate the information and then fork the signal to the appropriate motor or autonomic output, enabling quick reflexes and coordinated responses. In many texts they’re simply called interneurons, but the concept is the same: they connect sensory input to motor or glandular output, forming the communication link inside the spinal cord.

The main idea here is a bridge-building neuron within the spinal cord. These neurons take the signals that arrive from sensory neurons and pass them along to the neurons that trigger actions—motor neurons that contract muscles—and to autonomic pathways that control glands. In practice, sensory input is carried into the spinal cord by sensory neurons, but the actual relay and decision about what response to trigger happen in these relay, or connector, neurons. They integrate the information and then fork the signal to the appropriate motor or autonomic output, enabling quick reflexes and coordinated responses. In many texts they’re simply called interneurons, but the concept is the same: they connect sensory input to motor or glandular output, forming the communication link inside the spinal cord.