Comprehension quiz

Circadian Misalignment and Shift Work

Listen to the lesson carefully, then answer 10 comprehension questions. Pick one option per question.

Question 1What is the lecturer's main conclusion about circadian misalignment?

Workers naturally adapt to night shifts over time It only affects people with existing illnesses Sleeping pills are the best available treatment It is a preventable occupational hazard that needs action

Question 2What did further analysis reveal about the causes of metabolic problems in shift workers?

Meal timing is an independent and powerful culprit Sleep loss is the only significant cause Caffeine use fully explains the damage Genetics determines all the health risks

Question 3What best predicted long term health outcomes in the research?

The total duration of sleep The regularity of sleep timing The number of shifts worked monthly The amount of light in bedrooms

Question 4What is circadian misalignment, as defined at the start of the lecture?

A genetic disorder affecting the heart A sleep problem caused only by jet lag Chronic disruption when the body clock conflicts with external schedules Permanent brain damage caused by night work

Question 5Which organs does the lecturer name as having peripheral clocks?

The liver, pancreas and gut The heart, lungs and kidneys The skin, bones and muscles The eyes, ears and brain

Question 6What does research on veteran night shift nurses show?

They fully adapt within a few years They suffer less than new workers They need less sleep than day workers They show persistent hormonal disruption

Question 7What does the lecturer say happens to glucose tolerance at night?

It improves slightly during sleep It deteriorates markedly It stays the same as daytime It depends entirely on caffeine intake

Question 8What does an identical meal produce after midnight, compared with daytime?

A smaller rise in blood sugar levels No measurable change in blood sugar A far larger blood sugar excursion A slower but identical digestion process

Question 9What drives much of the metabolic derangement, beyond mere wakefulness?

High levels of workplace stress Light exposure Physical exertion during shifts Noise in the work environment

Question 10What do some researchers advocate for the scheduling of shift work?

Longer shifts with fewer total days Rotating all workers every week Banning night work in all industries Chronotype matched rosters