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Sending Messages


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Nervous System
Sends messages between body cells using neurons. Includes the central nervous system and the peripheral nervous system
Neurones
A nerve cell that carries nerve impulses. Used for fast responses
Hormones
Chemical substances that act like messenger molecules in the body. Used for long-lasting responses. Much slower than neurones
Sensory Neurone
Nerve cell carrying information from the receptor to the central nervous system
Central Nervous System
Includes the brain and spinal cord
Peripheral Nervous System
Network of nerves
Receptors
Detects stimuli and creates a nerve impulse
Motor Neurone
Nerve cell that carries information from the Central Nervous System to the muscles or glands
Effector
Part of body that responds to stimuli eg, muscles and glands
Nerve
A group of neurones