Sensory stimuli enter the spinal cord via c) afferent axons. Afferent axons are responsible for transmitting signals from sensory receptors located throughout the body to the central nervous system. These sensory receptors detect various stimuli such as touch, temperature, pain, and pressure, and convert these sensations into electrical signals. Once generated, these signals travel along the afferent axons, which are a part of the sensory neurons.
When the sensory information reaches the spinal cord, it can lead to a quick response (like pulling your hand away from something hot) or be relayed to the brain for further processing. In contrast, efferent axons carry signals away from the central nervous system to muscles and glands, while interneurons connect different neurons within the spinal cord and brain but do not carry sensory input to the spinal cord.