A 37-Year-Old Man Comes to the Office Due to Difficulty

A 37-year-old man comes to the office due to difficulty sleeping.  He says that his new job as a business executive is very stressful and requires considerable travel.  During the past 3 months, the patient has made numerous trips between the United States and France.  He experiences insomnia and daytime sleepiness for several days after these trips, but his sleep then improves significantly.  Which of the following hypothalamic nuclei is most likely responsible for this delayed improvement in his symptoms?

A) Anterior
B) Lateral
C) Posterior
D) Suprachiasmatic
E) Supraoptic
F) Ventromedial

Correct Answer:

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