What type of nerves carry impulses to the brain?

Sensory nerves play a crucial role in the nervous system by transmitting impulses from sensory receptors to the brain. These nerves are responsible for conveying information about external and internal environments, such as touch, pain, temperature, and other sensory modalities. When a sensory receptor detects a stimulus, it generates electrical signals that are sent along the sensory nerves to the central nervous system, where the information is processed and interpreted.

In contrast, motor nerves carry impulses from the brain to muscles and glands, enabling movement and responses. Affector nerves is a less commonly used term that also refers to sensory pathways but is not the standard terminology. Peripheral nerves encompass both sensory and motor nerves, as they are part of the peripheral nervous system, which connects the central nervous system to the limbs and organs. However, since the question specifically asks for nerves that carry impulses to the brain, sensory nerves are the most accurate answer.