Teaseâ¢ Pasties. Sexy Fun Freedom. Waterproof Latex free Glow Glitter Durable, stretchy and everything in between. #Pastease pastease.com.
III Oculomotor nerve. Fibers run from the mid-brain to the eye. Supplies motor fibers to four of the six muscles that direct the eyeball, to the eyelid, and to the internal eye muscles controlling lens shape and pupil size.
The iris is a contractile structure, consisting mainly of smooth muscle, surrounding the pupil. Light enters the eye through the pupil, and the iris regulates the amount of light by controlling the size of the pupil.hen this muscle contracts, it reduces the size of the pupil. This is the pupillary light reflex, which is an important test of brainstem function. Furthermore, the pupil will dilate if a person sees an object of interest.