Horizontal cells are connected to neighboring horizontal cells by what type of junctions?

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

Horizontal cells are connected to neighboring horizontal cells by what type of junctions?

Explanation:
Horizontal cells connect to neighboring horizontal cells through gap junctions, which are electrical synapses forming direct cytoplasmic channels between cells. These gap junctions, made by connexin proteins, allow ions and small molecules to pass readily, enabling fast, bidirectional electrical coupling. This lateral coupling supports the retina’s center-surround organization by spreading signals and enhancing contrast through lateral inhibition. Chemical synapses involve neurotransmitter release and are not the main means of coupling between horizontal cells, while desmosomes and tight junctions are adhesive or barrier structures, not channels for ion flow.

Horizontal cells connect to neighboring horizontal cells through gap junctions, which are electrical synapses forming direct cytoplasmic channels between cells. These gap junctions, made by connexin proteins, allow ions and small molecules to pass readily, enabling fast, bidirectional electrical coupling. This lateral coupling supports the retina’s center-surround organization by spreading signals and enhancing contrast through lateral inhibition. Chemical synapses involve neurotransmitter release and are not the main means of coupling between horizontal cells, while desmosomes and tight junctions are adhesive or barrier structures, not channels for ion flow.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy