Some Terms Used to Describe Components of the Nervous System

Criteria
Terms

Location
CNS; PNS (includes ANS)

Embryology
Somatic; Visceral

Direction of information travel relative to CNS
Afferent (Sensory); Efferent (Motor)

Function
Effector; Integrator; Receptor;

Position relative to pharyngeal pouches
Posttrematic; Pretrematic

Position relative to cranium
Cranial nerves; Spinal nerves

Functional divisions of ANS
Parasympathetic; Sympathetic