Which of the following best describes the role of synapses in the nervous system?

The role of synapses in the nervous system is best described as signaling transmission between neurons. Synapses are specialized junctions through which neurons communicate with one another. When an electrical impulse, or action potential, travels down a neuron, it reaches the synapse and triggers the release of neurotransmitters. These chemicals cross the synaptic gap and bind to receptors on the neighboring neuron, thereby either stimulating or inhibiting the continuation of the signal.

This transmission process is crucial for the functioning of the nervous system, allowing for coordination and communication between different parts of the body. The ability to transmit signals accurately and effectively through synapses enables the brain to process information, control movements, and coordinate responses to stimuli.

While the first option suggests that synapses conduct electrical impulses, it is important to note that this is not their function. Synapses facilitate chemical communication rather than direct electrical conduction. The other options about connecting muscles and protecting neurons do not accurately reflect the primary role of synapses within the neuronal communication network.