All are mesodermal in origin except (AI - 2011)
|A||Dilators of iris|
Dilators of iris
Eye ball is derived mainly from secondary mesenchyme/mesoderm which is contributed by neural crest cells. whereas,
Surface ectoderm gives: 1. Surface layer of cornea & 2. Eye lens and
Neural plate ectoderm derivatives : 1. Retina & Optic nerve, 2. Epithelium of Ciliary body & Iris, 3. Sphincter & dilator muscles.
Rest all components including stroma of Iris / Ciliary body, Choroid are derivatives of neural crest cells.