The Diurnal Light-Dark Cycle Entrains the Sleep-Wake Cycle Via the

question 106

Multiple Choice

The diurnal light-dark cycle entrains the sleep-wake cycle via the

• A) REM-sleep circuits.
• B) cortex.
• C) retinohypothalamic tracts.
• D) caudal brain stem.
• E) reticular formation.

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Definitions:

Break-even Point

The point at which total costs and total income are equal, so there is no loss or gain, and the business is just covering all its costs with its sales revenue.