Use a reflex arc diagram to identify sensory, relay and motor neurones.

In the subtopic Structure and function, this learning objective focuses on use a reflex arc diagram to identify sensory, relay and motor neurones. Within The human nervous system, students should explain this idea in the exact curriculum context rather than as an isolated fact. Approved keywords for this objective include motor neurone and reflex arc. reflex arc means a neural pathway that controls a reflex action, consisting of a stimulus, receptor, sensory neurone, relay neurone, motor neurone, and effector. Avoid students often confuse the roles of sensory, relay, and motor neurones when interpreting a reflex arc diagram; instead to fix this, students should review the functions of each type of neurone: sensory neurones carry impulses from receptors to the CNS, relay neurones connect sensory and motor neurones within the CNS, and motor neurones transmit impulses from the CNS to effectors. For exam answers, practice labeling a reflex arc diagram multiple times, ensuring you can identify sensory, relay, and motor neurones accurately.