A smoke alarm wakes Jordan at 02:00. After the sound stops, Jordan's heart is still beating quickly, breathing is faster and alertness remains high.
Which explanation best accounts for why Jordan cannot fall asleep again straight away?
The suprachiasmatic nucleus is signalling that morning has arrived.
The parasympathetic branch is keeping heart rate and breathing raised.
The pineal gland is raising alertness by releasing melatonin.
The sympathetic branch is keeping the body prepared for action.
33 exam-style questions on OCR GCSE Psychology 6.3 Application: Development of treatments for insomnia, covering 6.3.1 Managing insomnia and 6.3.2 Neurological damage to the hypothalamus. Each one has a worked solution and a mark scheme showing where the marks go.