Circular muscles of the iris are controlled by the [dropdown 1] nervous system and cause the pupil to [dropdown 2].Radial muscles of the iris are controlled by the [dropdown 3] nervous system and cause the pupil to [dropdown 4].The circular muscles are controlled specifically by the [dropdown 5] cranial nerve.
*Dropodwn 1&3 choices:
-central
-enteric
-parasympathetic
-sympathetic
*Dropodwn 2&4 choices:
-constrict
-dilate
*Dropodwn 5 choices: Optic
-abducens oculomotor
-trochlear