IntroNS Practice Exam

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Which structure lies medial to the lateral ventricle and connects ventrally and laterally to the olfactory cortex?
Correct Answer:
Hippocampus
Explanation:
The essential idea is the hippocampus’s location and its connection to the smell system. The hippocampus sits in the medial temporal lobe and forms the medial boundary of the inferior horn of the lateral ventricle, so it lies medial to the lateral ventricle. It links to the olfactory cortex mainly through the entorhinal cortex, which sits between the hippocampus and olfactory areas, providing a pathway for olfactory information to reach the hippocampus. This setup makes the hippocampus the structure that is both medial to the ventricle and connected to the olfactory cortex. The olfactory cortex itself isn’t medial to the ventricle, and the other options aren’t the structures that fit this anatomical relationship.

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