3993536
Description
Flashcards by Rick Lanuza, updated more than 1 year ago
|
Created by Rick Lanuza
about 9 years ago
|
|
| Question | Answer |
| What are the critical days in the first month of gestation? | 13, 15, 17 |
| What develops day 13 of gestation? (8 in mouse) | Optic Sulci at forebrain |
| What develops day 15 of gestation? (9 in mouse) | Optic Vesicles |
| What develops day 17 of gestation? (10 in mouse) | Lens formation starts (placode contacts surface ectoderm) |
| What develops day 19 of gestation? (11 mouse) | Optic cup Oculomotor n. Retinal primordium |
| What develops day 25 of gestation? | Lens complete (lens vesicle separates from surface ectoderm) Hyaloid artery develops Retina: inner margin and outer nuclear zones |
| What develops day 29 of gestation? (11.5 mouse) | Primary lens fibers Trochlear & Abducens n.'s Eyelid folds |
| What develops day 32 of gestation? (17 mouse) | Anterior chamber forms Eyelids fuse |
| What develops at day 40 of gestation? | 2ndary lens fibers C.B. processes, Iris, EO mm.'s Choriodal pigment layer complete |
| What develops at day 45 of gestation? | Hyaloid a. atrophy begins Iris stromal pigment Ciliary processes touch lens equator Rods/cones appear |
| What develops at day 51 of gestation? | Pupillary sphincter Retinal vessels |
| What develops at day 56 of gestation? | Tapetum Ciliary mm |
| What is tertiary vitreous? | Zonular fibers (origins uncertain) |
| What anomalies are assoc w/ microphthalmia? | Ant seg dysgenesis: St. Bernard, Dobie Cataract: Eng Sheepdog, Akita, Min Schnauzer, Chow, Cav King Char Sp., Irish Wolfhound Retinal Dysplasia: St. Bernard, Dobie |
| Embryonic origin of striated mm of iris in birds? | Neural Crest |
| Surface Ectoderm gives rise to which ocular tissue? | Corneal & Conjunctival Epithelium, Lens Capsule, Lacrimal gld |
| Neural Ectoderm gives rise to which ocular tissue? | Ciliary body epi Posterior iris epi Neural retina RPE Pupillary mm's (sphincter/dilator) Vitreous |
| How long after parturition does the retina continue to develop? | 40 days |
| What days during gestation do 'retinal folds/retinal dysplasia' become apparent? | 45-50 days |
| How long after birth do pictenate ligaments continue to develop? | 3 weeks post-natal |
| What are some viral induced "retinal dysplasia?" | Canine herpes virus (early post-natal exp) Panleukopenia virus BVD Bluetongue virus |
Want to create your own Flashcards for free with GoConqr? Learn more.