ABFM Sleep Medicine Practice Questions - ABFM Sleep Medicine Subspecialty Certification Exam

The suprachiasmatic nucleus (SCN) is entrained to the external light-dark cycle primarily through which pathway?

Olfactory bulb input Retinohypothalamic tract from intrinsically photosensitive retinal ganglion cells Auditory input via the cochlear nerve Spinothalamic tract from peripheral thermoreceptors

Correct Answer:

Retinohypothalamic tract from intrinsically photosensitive retinal ganglion cells

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