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These diverticula make their appearance before the closure of the anterior end of the neural tube; [1] [2] after the closure of the tube around the 4th week of development, they are known as the optic vesicles. Previous studies of optic vesicles suggest that the surrounding extraocular tissues – the surface ectoderm and extraocular mesenchyme ...
Failure of the cells of the posterior portion of the optic vesicles to express growth hormone affects the differentiation of other cells of the eye. The choroid, especially lateral to the optic disc, is hypoplastic (underdeveloped). A coloboma, or hole, may form in or near the optic disc due to a failed closure of embryonic tissue.
The optic vesicles project toward the sides of the head, and the peripheral part of each expands to form a hollow bulb, while the proximal part remains narrow and constitutes the optic stalk. [1] [2] Closure of the choroidal fissure in the optic stalk occurs during the seventh week of development. The former optic stalk is then called the optic ...
Related: Dog Arthritis Symptoms and Home Pain Remedies There are several things you can do at home to help an older dog with arthritis, including changing her diet. Photo by manfredxy, Canva
1. Ketogenic Diet. Cancer cells rely on glucose for energy to grow. The ketogenic diet is a way to provide an alternative energy source to normal cells in the dog's body while starving the cancer ...
Dogs with a bacterial infection feel an increased need to urinate. Some dogs will have dark urine or other signs of illness and, when treated with antibiotics and other treatments, this can clear ...
This page was last edited on 21 May 2011, at 03:46 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...
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