The muscles of the iris and ciliary body are | vedclass

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Question

(A) The muscles of the iris (sphincter pupillae and dilator pupillae) and the ciliary body (ciliary muscle) are unique in the human body because they

Vedclass · Accepted Answer

Ectoderm

Vedclass · Answer

(A) The muscles of the iris (sphincter pupillae and dilator pupillae) and the ciliary body (ciliary muscle) are unique in the human body because they are derived from the neuroectoderm,which is a specialized part of the ectoderm. During embryonic development,these structures originate from the optic cup,which is an outgrowth of the developing brain (diencephalon). Therefore,the correct embryonic origin for these muscles is the ectoderm.

The muscles of the iris and ciliary body are derived from the:

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