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38. The circadian rhythm is influenced by light-sensitive retinal proteins that trigger signals to the a. suprachiasmatic nucleus. b. thyroid gland. c. sleep spindles. d. dopamine reward system.
15. Circadian rhythms can be described as a A) repetition of physiological events such as a heartbeat B) sequence of brain activity following stimulation C) monthly behaviour or physiological cycle D) weekly behaviour or physiological cycle E) daily behaviour or physiological cycle
27. Following an intense, 4 hour exam, sleep is usually deeper and lasts somewhat longer. This supports the theory of sleep. A) peripheral feedback B) circadian rhythm C) preservation and protection D) restoration E) evolution
