Nervous system and Reflex arcs

How many sense organs are connected to the nervous system?

5

What special cells are sense organs made of?

Receptors

What do receptors do?

• Respond to certain stimulus

• Collect surrounding information to pass it on through electrical impulses along neurones to the central nervous system

What make up the Central Nervous System?

Brain and Spinal cord

What does your Central Nervous System do?

Store information or decide a reaction

Reflex arc - 1

Stimulus - eg heat

Reflex arc - 2

Receptor - eg skin

Reflex arc - 3

Sensory neurone

Reflex arc - 4

Co-ordinator - either spinal cord or brain

Reflex arc - 5

Motor neurone

Reflex arc - 6

Effector - either muscle or gland

Reflex arc - 7

Response - eg pulling away