what is an axon surrounded by

what happens when the receptor detects a stimulus

what happens after the sensory neurone sends a signal to the relay neurone

what happens after the motor neurone sends a signal to the effector

what are neurones

what do neurones do

what is the myelin sheath

what transports the hormones from the glands to the target hormones

what is the sensitive centre called in the brain

what does the hypothalamus control

what does the thyroid gland produce and what does it control

what does adrenaline prepare the body for

what is ion content controlled by

what is body temperature controlled by

where is a relay neurone located

what is the motor neurone attached to

what is a synapse