Chronobiology and Circadian Rhythms — Flashcards

Circadian rhythm: The suprachiasmatic nucleus releases _____, which stimulates the pineal gland to secrete melatonin

The _____ nucleus of the hypothalamus is responsible for our circadian rhythm, which regulates the sleep cycle

Sleep is divided into two stages, _____ and non-REM

Cortisol levels are highest just before _____ and lowest in the evening

Glucocorticoid (cortisol) secretion is _____ and diurnal (daily) in nature, oscillating with a circadian rhythm

Pontogeniculo-occipital spikes are characteristic of _____ sleep

Telogen phase of hair cycle lasts for about _____

Nasal cycle is rhythmic congestion and decongestion which varies every _____ h and may be characteristic of an individual.

Each 30s segment of the polysomnography recording is called as _____

Which nucleus of the hypothalamus is responsible for the diurnal variation of ACTH levels?_____