The olfactory trigone is a triangular expansion of the olfactory peduncle.
References
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![Olfactory trigone - Cranial nerves - Olfactory nerve [I] - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/nerfs-craniens-anatomie/images/v2/99ae9d5f9ed054fd0e15046308c0b5728a937f47d1f9f8107a987cdcf6c36b3e?ar=640:670&auto=format,compress&bg=FFFFFF&fit=crop&p64=OTM4LDU5Mg&t=T2xmYWN0b3J5IHRyaWdvbmU&tx=938&ty=592&w=350&wk=1&s=2128cf93c168e4221e674a88d1f0343b)
![Olfactory trigone - Cranial nerves - Olfactory nerve [I] - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/nerfs-craniens-anatomie/images/v2/99ae9d5f9ed054fd0e15046308c0b5728a937f47d1f9f8107a987cdcf6c36b3e?ar=640:670&auto=format,compress&bg=FFFFFF&fit=crop&p64=OTM4LDU5Mg&t=T2xmYWN0b3J5IHRyaWdvbmU&tx=938&ty=592&w=200&wk=1&s=d476db0f31066a28833a7f9f339f8428 "Olfactory trigone - Cranial nerves - Olfactory nerve [I] - e-Anatomy")
