What is the synaptic terminal for a cone called?

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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

What is the synaptic terminal for a cone called?

Explanation:
Cone photoreceptors terminate in a cone pedicle located in the outer plexiform layer. This pedicle is a specialized, foot-like synaptic ending that houses synaptic ribbons, supporting rapid and sustained glutamate release to the connected bipolar and horizontal cells. Rods, in contrast, end as rod spherules. The term ribbon synapse describes the type of contact at these terminals, not the name of the terminal itself, and bouton is a more general term for a small synaptic ending not specific to cones. Therefore, the synaptic terminal for a cone is called a pedicle.

Cone photoreceptors terminate in a cone pedicle located in the outer plexiform layer. This pedicle is a specialized, foot-like synaptic ending that houses synaptic ribbons, supporting rapid and sustained glutamate release to the connected bipolar and horizontal cells. Rods, in contrast, end as rod spherules. The term ribbon synapse describes the type of contact at these terminals, not the name of the terminal itself, and bouton is a more general term for a small synaptic ending not specific to cones. Therefore, the synaptic terminal for a cone is called a pedicle.

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