Iris and Ciliary Muscles: Location and Control - A Comprehensive Guide

No, the iris and ciliary muscles are not located in the choroid. They are located in the front part of the eye, in the uveal tract. The choroid is located in the back part of the eye, between the retina and the sclera.

And yes, the iris and ciliary muscles are both involuntary muscles. This means that you do not have conscious control over them. They are controlled by your autonomic nervous system, which is responsible for regulating involuntary bodily functions such as breathing, digestion, and heart rate.