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The Nervous System

The Nervous System. Functions of the Nervous System Receives information about what is happening both inside and outside your body Directs the way in which your body responds to the information it receives

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The Nervous System

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  1. The Nervous System

  2. Functions of the Nervous System • Receives information about what is happening both inside and outside your body • Directs the way in which your body responds to the information it receives • Lastly, your nervous system helps to maintain stable internal condition which is homeostasis.

  3. Stimulus – a change or signal in the environment that can make an organism react Response – how the body reacts to the stimulus

  4. Neuron – Cell that carries information through the nervous system Nerve impulse – Message that a neuron carries

  5. Direction of Impulse (One Way ONLY) Dendrite – Carries impulses TOWARD the Cell Body. Axon – Carries information AWAY from the Cell Body.

  6. Types of Neurons: • Sensory Neuron – picks up information from internal / external environment and converts the information to an impulse • Interneuron – neuron that carries information from one neuron to another neuron • Motor Neuron – sends an impulse to a muscle causing it to contract

  7. Synapse – tiny space between the axon tip and the next structure

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