What is the role of the sensory neurons within the PNS?

The role of sensory neurons within the peripheral nervous system (PNS) is to carry information from the body to the central nervous system (CNS). Sensory neurons are responsible for transmitting signals related to sensations such as touch, pain, temperature, and proprioception. When these sensory receptors detect changes or stimuli in the environment, they convert that information into electrical impulses, which travel along the sensory neurons to the spinal cord and brain. This process allows the CNS to process and interpret sensory information, leading to appropriate responses or higher-level functions such as perception and memory.

Other options refer to different functions in the nervous system. For instance, sending signals from the CNS to muscles describes the role of motor neurons, while controlling reflex actions involves both sensory and motor pathways to create a quick response. Regulating internal organ functions is typically managed by autonomic neurons, which are part of the PNS but focus more on involuntary bodily functions rather than sensory input. Thus, the correct choice accurately describes the specific function of sensory neurons in conveying information toward the CNS.