Differentiate between adrenergic and cholinergic receptors.

Video transcript

Hi everyone. Let's take a look at this practice problem together. The following statements describe andre ergic receptors except the answer. Options are a Andre nic receptors activate the parasympathetic nervous system. B. Andre Igic receptors bind catecholamines. C adrenergic receptors are G protein coupled receptors mainly involved with the sympathetic nervous system. And option D andre nic receptors have two types alpha and beta receptors. Now recall that Andre nic receptors are part of the sympathetic nervous system. So let's work through each statement to find the incorrect one. Option D ergic receptors are indeed either alpha or beta and this is due to the different structures of the proteins. So option D is true and we can go ahead and eliminate it as the correct answer. Option C we know that ergic receptors are involved with the with the sympathetic nervous system. So that part of the statement is true. Ergic receptors are also G protein coupled receptors and these are a specific subset of cell surface receptors. So option C is also a true statement and we can eliminate it. Option B Andre ergic receptors bind catecholamines. Now recall that the catecholamines are epinephrine and norepinephrine and Andre nic receptors do indeed bind the catecholamines. So, option B is also a true statement. Therefore, the correct answer has to be option A Andre ergic receptors activate the sympathetic nervous system, not the parasympathetic nervous system. So the correct answer is option A Andre nic receptors activate the parasympathetic nervous system. All right, everyone. I hope you found this helpful and I'll see you soon for the next practice problem.