State the exact location of the following structure:
Ciliary body.

1. The ciliary body is a part of the eye that includes the ciliary muscle.
2. This is a part that controls the shape of the lens by surrounding the lens.
3. The contraction of these muscles helps in the movement of the lens to allow the passage of light.
4. There are cells in the ciliary body that are called the ciliary epithelium.
5. This epithelium produces aqueous humor.
6. The ciliary body is part of the uvea.
7. The uvea is the layer that is responsible for the delivery of oxygen and nutrients to the eye tissues.
8. The ciliary body is present at the junction of choroid and iris.
   

Final answer: Location of the ciliary body is at the junction of choroid and iris.