A college student who is working in northern Alaska during the summer reports that he or she has an increase in difficulty sleeping since moving north.During a pre-employment physical,the patient asks the health care provider what could be causing this.The health care provider suspects the sleep disturbance is most likely because of which factor?

Question

Quizplus · Accepted Answer

Northern Alaska has extended daylight hours.Light and temperature affect all circadian rhythms,including the sleep-wake cycle.The most familiar rhythm is the 24-hour,day-night cycle known as the diurnal or circadian rhythm.When the sleep-wake cycle becomes disrupted (e.g.,by working rotating shifts),other physiological functions change as well.Stress of the new job,physical demands of the new job,and a change in diet are not the issues.The patient stated that the difficulty started when he or she moved north.

A College Student Who Is Working in Northern Alaska During