Term
| what are the optic grooves derived from |
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Definition
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Term
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Definition
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Term
| Critical period for eye development |
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Definition
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Term
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Definition
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Term
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Definition
| failure of the optic vesicle to form |
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Term
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Definition
| development of forebrain is abnormal and the absence of the eyes is secondary to that |
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Term
| what is choroid derived from |
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Definition
| neural crest derived mesenchyme |
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Term
| what is sclera derived from |
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Definition
| neural crest derived mesenchyme |
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Term
| what is corneal endothelium derived from |
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Definition
| neural crest derived mesenchyme |
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Term
| what are sphincter and dilator pupillae mm derived from |
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Definition
| neural crest derived mesenchyme |
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Term
| what are ciliary mm derived from |
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Definition
| neural crest derived mesenchyme |
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Term
| what is the retina derived from |
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Definition
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Term
| what are the posterior layers of the iris and ciliary body derived from |
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Definition
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Term
| what is the optic nerve derived from |
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Definition
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Term
| what are the fibrous and vascular coats of the eye derived from |
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Definition
| Mesoderm derived Mesenchyme |
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Term
| what are the extra-occular mm derived from |
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Definition
| Mesoderm derived Mesenchyme |
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Term
| what is the lens of the eye derived from |
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Definition
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Term
| what is the corneal epithelium derived from |
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Definition
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Term
| what is the conjunctival epithelium derived from |
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Definition
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Term
| what is the lacrimal gland derived from |
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Definition
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Term
| what does the inner layer of the optic cup form |
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Definition
| the inner nine layers of the sensory retina (including rods and cones) and the inner layer of the non-neural portion of the retina. |
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Term
| what does the outer layer of the optic cup form |
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Definition
| retinal pigmented epithelium and becomes the outermost layer of the sensory retina as well as the outer layer of the non-neural portion of the retina |
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Term
| What happens if the retinal (choroid) fissure does not close? |
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Definition
| a coloboma occurs in the eye |
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Term
| What happens if the intraretinal space is not obliterated |
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Definition
| congenital detachment of the retina |
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Term
| What happens to the distal and proximal portions of the hyaloid artery? |
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Definition
| the distal portion degenerates; the proximal portion becomes the central artery of the retina |
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Term
| what does the optic groove form (step 1) |
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Definition
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Term
| what does the optic vesicle form (step 2) |
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Definition
| lens placode and optic cup |
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Term
| what does the optic cup form (step 3) |
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Definition
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Term
| what does the lens placode form (step 3) |
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Definition
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Term
| what does the lens pit form (step 4) |
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Definition
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Term
| what does the lens vesicle form (step 5) |
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Definition
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Term
| when do lacrimal glands become fully functional |
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Definition
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Term
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Definition
| increased intraocular pressure from abnormal development of the fluid draining spaces in eye. aqueous humor builds up |
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Term
| which pharyngeal arches contribute to ear formation |
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Definition
| mandibular portion of pharyngeal arch one and arch two |
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Term
| Which parts of the temporal bone have cartilage precursors |
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Definition
| the petromastoid portion and styloid portion |
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Term
| which parts of the temporal bone were derived from a pharyngeal arch |
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Definition
| styloid process from arch 2 and the squamous portion from arch 1 |
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Term
| which parts of the temporal bone ossify endochondrally |
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Definition
| petromastoid and styloid portions |
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Term
| which parts of the temporal bone ossify intramembranously |
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Definition
| squamous portion and tympanic ring |
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Term
| what is the primordium of the membranous labyrinth |
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Definition
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Term
| When do the middle and inner ear structures stop growing? |
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Definition
| They are adult size at birth |
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Term
| Can a newborn develop mastoiditis? |
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Definition
| No. The mastoid process is not present at birth but develops during childhood. |
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