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Nervous/Endocrine 1

All the vocabulary for Level 1 of the Nervous system & Endocrine system menu.

TermDefinition
nervous system "all the nerves of the body, plus your brain and spinal cord - sends FAST messages like electricity through wires"
neuron "a nerve cell, found throughout the body. they consist of 3 parts (axon, dendrite, cell body)"
nerve a bundle of one or more neurons that carry messages throughout the body
stimulus any internal or external change that causes a response by your body
response a reaction (by your body) to a stimulus (change in environment)
homeostasis "the regulation of steady, life-maintaining conditions (another word for regulation)"
regulation the way your body controls its internal environment (another word for homeostasis)
impulse an electrical message that travels along a nerve
receptor "a body part that receives a stimulus (eye, skin, eardrum, etc.) - they contain a LOT of nerves close to the surface of your body!"
spinal cord "an extension of the brain stem made up of a bundle of nerves that runs down the back. where reflexes are controlled."
brain a part of the nervous system which coordinates all of your body's activities
hormone chemical messengers used by the endocrine system to speed up and slow down body processes
endocrine system a system of glands to produce hormones to regulate the body's activities - sends messages SLOWLY through the bloodstream
glands "organs that are part of the endocrine system - which make and secrete (give off) hormones"
circulatory system "System made up of the heart, blood vessels & blood. It carries hormones to their target tissues (also carries many other chemicals & special cells)"
muscles Tissues that move your body by pulling on your bones. They receive messages from the brain that tell them to move!
Created by: OMSscience8
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