Exam 17: A: Sense Organs

In referred pain,pain in a visceral organ is referred to skin sensors directly above it.

The vitamin A derivative opsin is an important component of photopigments in rods.

All muscles of the eye are involuntary.

Usually the closer an object is,the greater the degree of convergence that is necessary to maintain single vision.

The iris is the colored part of the eye.

Both rods and cones function to produce color vision.