<prompt> Corneal endothelium is derived from:NeuroectodermNeural crest cellsMesodermSurface ectoderm  <response>: SURFACE ECTODERM - LENS- Epithelium of the all structures except ciliary body iris- Glands NEURAL ECTODERM - Epithelium of ciliary body iris- Retinal pigment epithelium- Optic nerve- Sphincter and dilator pupillae muscles - Smooth muscles of iris MESODERM - EXTRAOCULAR MUSCLES- Endothelium of all the orbit stroma of iris ciliary body- Sclera temporal pa NEURAL CREST - Stroma of cornea choroid - Corneal endothelium - Sclera except temporal pa -Melanocytes -Corneal keratocytes -Ciliary muscles -Ciliary ganglion -Stroma of iris -Choroid Trabecular meshwork 