Frontal cortex or hippocampus closer to olfactory bulb, hypothalamus, & BBB?

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Is it reasonable to say that "the frontal cortex is further from the olfactory bulb, BBB, and hypothalamus than the hippocampus"? I haven't taken neuroanatomy before.

part of frontal cortex( orbitofrontal) is next to olfactory bulb so its closer. Its probably further from hippocampus than the hypothalamus.
Not sure about BBB- that is probably equally close to all cortical structures, it will be hard to say.
 
part of frontal cortex( orbitofrontal) is next to olfactory bulb so its closer. Its probably further from hippocampus than the hypothalamus.
Not sure about BBB- that is probably equally close to all cortical structures, it will be hard to say.
Thank you!
 
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