Week 2 Day 7 Assignment Beh225 Brain Response of Behavior

Week 2 Day 7 Assignment Beh225 Brain Response of Behavior -...

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Axia College Material Appendix C Brain Response of Behavior Part I Note: Parts II and III follow below, complete all three. Run Multimedias 2.3 and 2.4 o Go to the Web site www.prenhall.com/morris . o Click text: Psychology: An Introduction (12 th ed.) o Click “2” on the select a chapter tool bar. o Click Live!Psych on the left hand menu. o Select 2.3 and 2.4. Write a 350- to 700-word response to the following: Explain the communication process of neurons in the brain. List some common neurotransmitters and describe their effect on behavior. In order for the brain to communicate, its neurons must receive electrical chemical messages from their neighbors to undergo its nerve impulse or action potential. Once the message is received, the nerve impulse travels down the axon to the terminal buttons near the end of the axon. The result is a release of neurotransmitters to the next neuron in line. This release happens at the synapse site. Because of the gap, called the synaptic cleft, neurons do not actually touch. It is in the synaptic cleft that the neurons transmit their impulses. The gap is located at the end of the first neuron’s axon and the second neuron’s dendrite. The neuron that sends a message is called a presynaptic neuron, while the receiver is called the postsynaptic neuron. Located in the presynaptic neuron’s terminal buttons are tiny sacs called synaptic vesicles. These synaptic vesicles house the neurotransmitters that are released into the synaptic cleft and received by the postsynaptic neuron’s dendrites. When a neural impulse reaches the terminal button end, some of the neurotransmitters are released. These chemical molecules disseminate across the synaptic cleft to make contact with the dendrite of the postsynaptic neuron. The receiving site of the synaptic cleft binds the neurotransmitter molecules to the dendrites receptor sites briefly. The molecules fit like a lock and key. The receptors only accept neurotransmitters of a certain shape
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