Which is not correct about the vascular tunic of the eye?

A. The choroid is the most extensive and posterior region of the vascular tunic.
B. Melanin pigment granules in the choroid absorb extraneous light.
C. The iris is composed of two groups of skeletal muscle fibers.
D. The ciliary body epithelium secretes aqueous humor.
E. Relaxation and contraction of ciliary muscles alter the shape of the lens.


Answer: C

Anatomy & Physiology

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