The various neurotransmitter systems each release a chemical of a different “flavor” along a unique pathway from one brain region to another. This is sometimes described using a lock and key model, where the neurotransmitter is the specific “key” that fits into the receptor, or “lock.” Furthermore, the brain may produce many different neurotransmitter receptors, each responding differently to the same chemical, such that the number of signals that can be transmitted in the brain seems innumerable. Understanding the functions of the nervous system requires an understanding of these different neurotransmitters and the receptors.

For this week’s Discussion, you will select a particular neurotransmitter and describe one or two places in the nervous system where this transmitter is typically found and the effects of this transmitter on behavior.

Note: For this Discussion, you are required to complete your initial post before you will be able to view and respond to your colleagues’ postings. Begin by clicking on the Post to Discussion Question link, and then select 

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Thread to complete your initial post. Remember, once you click on Submit, you cannot delete or edit your own posts—and cannot post anonymously. Please check your post carefully before clicking on Submit.

To prepare:

• Select a specific neurotransmitter to explore in greater detail.
• Review the relevant Learning Resources, focusing on the how your chosen neurotransmitter interacts with receptors and how it is affected by different types of drugs.

By Day 3

Post a description of your chosen neurotransmitter and the receptors it acts on.

Include descriptions of the two types of receptors (metabotropic and ionotropic) as well as what it means to be an agonist or antagonist for a receptor.

Identify at least two specific drugs that affect your chosen neurotransmitter. You may select naturally occurring or synthetic drugs, as well as those used recreationally and/or for medical purposes.

Finally, identify which type or types of receptors your specific transmitter it acts on and whether it is an agonist or antagonist, explaining both terms.

Support your posting with specific references from literature in the Walden Library and Learning Resources. Zero plagiarizing, Quote work, No.coms