I would really appreciate some help. Thank you. will rate right answers. Questio

Question

I would really appreciate some help. Thank you. will rate right answers.

Question 4 Which of the following satements is NOT true regarding the embryonic structures that develop into the lens and cornea? o 1. Lens: lens placode. o 2.Cornea: from outside it is formed by the outer epithelial layer derived from the surface ectoderm, o 3. the substantia propria or stroma form the sclera, which is continuous with the neuron retina, derives from the surrounding mesenchyme. o 4.the inner epithelial layer, which borders the anterior chamber, derived also from the mesoderm.

Explanation / Answer

Answer:-

Option "4"-the inner epithelial layer which boarders anterior chamber derived also from Mesoderm.

Explanation:-

DERIVATIVES OF VARIOUS LAYERS

Neuroectoderm

Surface ectoderm

1.      Lens

2.      Corneal epithelium

3.      Conjunctiva and caruncle

4.      Eyelid skin

5.      Lacrimal apparatus (glands and drainage system)

Head mesenchyme (neural crest and/or mesoderm)

1.     Blood vessels

2.     Corneal stroma and endothelium

3.     Stroma of choroid, ciliary body, and iris

4.     Ciliary muscle

5.     Sclera

6.     Optic nerve sheath (meninges)

7.     Extraocular muscles and fasciae

8.     Remainder of the eyelids (orbicularis oculi muscle, tarsus, orbital septum, etc)

9.     Vitreous (part).

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