What does a sensory signal transmit?

A sensory signal specifically involves the transmission of information from sensory receptors to the central nervous system (CNS). This process includes detecting environmental stimuli, such as light, sound, touch, temperature, and chemical changes, and converting these stimuli into electrical impulses. These impulses travel along sensory neurons to reach the CNS, where they are processed and interpreted, allowing the organism to respond appropriately to its environment.

The other options do not align with the role of a sensory signal. For instance, the transmission from the central nervous system to muscles refers to motor signals, which are responsible for initiating movement. Similarly, signaling between muscles or from bone to muscle involves different pathways that do not concern sensory input. Thus, the definition of a sensory signal is accurately captured by its role in relaying information from receptors to the CNS.