In the Stretch Reflex, a Signal from a Sensory Neuron

question 44

Multiple Choice

In the stretch reflex, a signal from a sensory neuron that detects stretch in a muscle reaches a motor neuron innervating the stretched muscle via

• A) excitatory interneurons in the brain.
• B) a single excitatory synapse.
• C) inhibitory interneurons in the spinal cord.
• D) direct sensory-to-motor-neuron synapses as well as excitatory spinal interneurons.

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