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| Questão | Responda |
| what is an axon surrounded by | the myelin sheath |
| what happens when the receptor detects a stimulus | the sensory neurone sends a signal to the relay neurone |
| what happens after the sensory neurone sends a signal to the relay neurone | the motor neurone sends a signal to the effector |
| what happens after the motor neurone sends a signal to the effector | the effector produces a response |
| what are neurones | nerve cells |
| what do neurones do | carry information as tiny electrical signals |
| what is the myelin sheath | a fatty layer that helps protect the neurone and allow impulses to travel faster |
| what transports the hormones from the glands to the target hormones | bloodstream |
| what is the sensitive centre called in the brain | hypothalamus |
| what does the hypothalamus control | the pituitary gland |
| what does the thyroid gland produce and what does it control | thyroxine which controls the rate of metabolism |
| what does adrenaline prepare the body for | rapid activity by increasing the heart rate and level of sugar in the blood and diverting blood to muscles and brain |
| what is ion content controlled by | the skin by sweating and the body in urine produced by the kidneys |
| what is body temperature controlled by | controlling blood flow to the skin sweating and shivering |
| where is a relay neurone located | spinal cord or brain |
| what is the motor neurone attached to | a gland or muscle |
| what is a synapse | a junction between two nerve cells |
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