Just want to make sure.
So, does B2 activ of ciliary muscle cause it to relax--> lens stretches, far vision foccus (cycloplegia) or is this pathway not under B2 sympathetic control, and only musc AcH mediated? From what I remember, I think B2 symp has a very MINOR control, but apparently it's negligible, and we assume that it's all under primary parasymp control? So, a musc antag would cause cycloplegia and NOT B2 agonist? Is this what I should learn for the step? I hate the bloody eye--someone with a bit more passion and appreciation for eye phys may wanna help me out.
So, does B2 activ of ciliary muscle cause it to relax--> lens stretches, far vision foccus (cycloplegia) or is this pathway not under B2 sympathetic control, and only musc AcH mediated? From what I remember, I think B2 symp has a very MINOR control, but apparently it's negligible, and we assume that it's all under primary parasymp control? So, a musc antag would cause cycloplegia and NOT B2 agonist? Is this what I should learn for the step? I hate the bloody eye--someone with a bit more passion and appreciation for eye phys may wanna help me out.
