Reference no: EM133599906

Discussion Post: Neurotransmitters and Receptors

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 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.

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.

Task

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

Question I. 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.

Question II. 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.

Question III. 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.