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The hypothalamus secretes hormones which control things such as body temperature, moods, sleeping patterns, heart rate, functions of other organs, etc. The nervous system is an electrical system. A neuron receives a signal with its 'feelers', which are known as dendrites, and then determines whether to pass the signal on or not. If the neuron continues the signal, it sends an impulse along a tube called an axon. At the end of the axon, there is a gap; this gap is called a synapse. The electric pulse will jump across this gap to other neurons, therefore passing on the information. There may be thousands of neurons that receive any one particular message, but only certain ones will respond. For example, when a person injures themselves, it will be the neurons that are responsible for feeling pain that respond and continue the message to the brain. However, this message might be sent to organs such as the hypothalamus or adrenal glands, and these glands then respond by secreting......

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Approximate Pages: 4 (250 words per double-spaced page)

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