The inner blood-retinal barrier is formed by tight junctions between which cells?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

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 inner blood-retinal barrier is formed by tight junctions between which cells?

Explanation:
The inner blood-retinal barrier is formed by tight junctions between retinal capillary endothelial cells. These endothelial tight junctions seal the paracellular space, regulating which substances move from the blood into the neural retina and keeping retinal neural activity stable. The outer barrier, in contrast, is created by tight junctions between the apical membranes of the retinal pigment epithelium. Photoreceptors are neurons and do not form the barrier, and while Müller cells support retinal structure and homeostasis, the primary tight-junction seal of the inner BRB resides in the endothelial cells lining the retinal capillaries.

The inner blood-retinal barrier is formed by tight junctions between retinal capillary endothelial cells. These endothelial tight junctions seal the paracellular space, regulating which substances move from the blood into the neural retina and keeping retinal neural activity stable. The outer barrier, in contrast, is created by tight junctions between the apical membranes of the retinal pigment epithelium. Photoreceptors are neurons and do not form the barrier, and while Müller cells support retinal structure and homeostasis, the primary tight-junction seal of the inner BRB resides in the endothelial cells lining the retinal capillaries.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy