Psychology, 2nd Edition

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LA#2 1. What is the nervous system? A nervous system is an extensive network of specialized cells that carries information to and from all parts of the body. 2. What is neuroscience? Neuroscience is a branch of the life sciences that deals with the structure and function of neurons, nerves, and nervous tissue especially focusing on their relationship to behavior and learning. 3. What is a neuron? A neuron is the basic cell that makes up the nervous system and that receives and sends messages within that system. 4. What are the structures of the neuron and what is the function of each structure? Dendrites are parts of the neuron that receive messages from other cells. The soma is attached to the dendrites, which contains the nucleus and keeps the entire cell alive and functioning. The axon is a fiber attached to the soma and its job is to carry messages out to other cells. 5. What does resting potential mean? Resting potential means the state of the neuron when not firing a neural impulse. 6. What is the action potential? Action potential means the release of the neural impulse consisting of a reversal of the electrical charge within the axon. 7. How do neurons communicate with each other and the body? Neurons communicate by using transmitters to communicate with each other by chemical or electrically. 8. What do ‘excitatory’ and ‘inhibitory’ mean in regard to the synapse? Excitatory synapse is a synapse at which a neurotransmitter causes the receiving cell to fire and inhibitory synapse is a synapse at which a neurotransmitter causes the receiving cell to stop
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PSY101-LA2 - LA#2 1. What is the nervous system? A nervous...

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