Select the correct answers to the questions from the given options. (Do not copy the questions, write the correct answer only.)
The structure that lies at the junction of the choroid and the iris and is itself a part of the choroid is called:
Topic: Ciliary body
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Pick an option and check your answer. The full worked answer is below either way.
Answer
(a) Ciliary body.
The CILIARY BODY is the thickened ring of tissue where the choroid ends and the iris begins. It is a continuation of the choroid, which is exactly what the question states.
Its two jobs: the ciliary muscles alter the curvature of the lens for ACCOMMODATION, and it secretes the AQUEOUS HUMOUR.
Why the others fail: SUSPENSORY LIGAMENTS attach the lens to the ciliary body — they connect to it but are not part of the choroid. The PUPIL is not a structure at all; it is the HOLE in the centre of the iris. The LENS is a separate transparent body behind the iris.
Fix the three coats of the eyeball in order from outside in: SCLERA (protective), CHOROID (nutritive, with the ciliary body and iris as its continuations), RETINA (sensory).
Ciliary body.