Which of the following is not a function of sensory organs?

Which of these is surrounded by the iris?

The diameter of the pupil is regulated by which of the following?

Which of these is false regarding synaptic clefts?

Which of these structures connect the cerebral hemispheres?

Which of these structures are found in the midbrain?

Which of the following layer forms the ciliary body?

How can a nerve cell be distinguished from other cells of the body?