NEUROLOGY
OCULAR PALSIES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the müllerian cell junctions of the outer plexiform layer of the retina
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the junctions of the endothelial cells of the vessels of the arterial system
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ganglion cells
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retinal pigment epithelium cell junctions
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Detailed explanation-1: -The blood-retina barrier (BRB) is composed of both an inner and an outer barrier. The outer BRB refers to the barrier formed at the retinal pigment epithelial (RPE) cell layer and functions, in part, to regulate the movement of solutes and nutrients from the choroid to the sub-retinal space.
Detailed explanation-2: -The retinal pigment epithelium (RPE) is an specialized epithelium lying in the interface between the neural retina and the choriocapillaris where it forms the outer blood-retinal barrier (BRB).
Detailed explanation-3: -Our results indicate that blood-retinal barrier is composed of vascular endothelial cells, basal lamina, pericytes (in some photos, the pericytes are not shown), and the processes of astroglial cells, similar to the structure of the blood-brain barrier.
Detailed explanation-4: -The BRB consists of inner and outer components, the inner BRB being formed of tight junctions between retinal capillary endothelial cells and the outer BRB of tight junctions between retinal pigment epithelial cells.