The choriocapillaris supplies blood to which part of the retina?

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Prepare for the NBEO Ocular Anatomy Posterior Segment and Cranial Nerves Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

The choriocapillaris supplies blood to which part of the retina?

Explanation:
The retina has two separate blood supplies: the inner retinal circulation from the central retinal artery and the choroidal circulation from the choriocapillaris. The choriocapillaris lies just beneath the retina and feeds the outer retina, which includes the photoreceptors and the retinal pigment epithelium, the most metabolically demanding part. The inner retinal layers get nourishment from the retinal vessels, not the choriocapillaris. The optic nerve has its own supply from pial vessels and short posterior ciliary arteries. So the choriocapillaris primarily nourishes the outer retina.

The retina has two separate blood supplies: the inner retinal circulation from the central retinal artery and the choroidal circulation from the choriocapillaris. The choriocapillaris lies just beneath the retina and feeds the outer retina, which includes the photoreceptors and the retinal pigment epithelium, the most metabolically demanding part. The inner retinal layers get nourishment from the retinal vessels, not the choriocapillaris. The optic nerve has its own supply from pial vessels and short posterior ciliary arteries. So the choriocapillaris primarily nourishes the outer retina.

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