Nerves that carry messages to the effectors: afferent nerves.
A peripheral nerve that conveys impulses from the central nervous system to the peripheral nerves; opposite of an afferent nerve.
A nerve that carries motor impulses from the central nervous system to an effector. These impulses may be excitatory, causing muscle contraction or glandular secretion, or inhibitory, diminishing muscle contraction or glandular secretion.
These are nerves that transmit electrical impulses from the central nervous system to the outer regions of the body.