|Sensory nervous system
||To detect changes in the external and internal environments.
|Integrative nervous system
||To analyse sensory input, store information.
|Motor nervous system
||To initiate response to stimuli.
|What is a reflex?
||A reflex is a quick involuntary response to change in the external environment or internal environment.
|What is a somatic reflex?
||A somatic reflex uses somatic motor neurones that excite skeletal muscle cells.
|What is a visceral reflex?
||A visceral reflex involves visceral organs and uses autonomic motor neurones to control cardiac or smooth muscle cells.
|What are the five key components of a reflex arc?
||Receptor, sensory neurone, integrating centre, motor neurone and effector.