Damage to the SCN eliminates the homeostatic process of many behaviors, including sleep. This statement is:

Prepare for the Certification in Clinical Sleep Health exam. Use flashcards and multiple-choice questions with hints and explanations. Ace your exam!

Multiple Choice

Damage to the SCN eliminates the homeostatic process of many behaviors, including sleep. This statement is:

The SCN is the master clock that sets circadian timing, coordinating when we are awake and asleep over a 24-hour cycle. Damage to the SCN disrupts these circadian rhythms, causing loss of a stable daily pattern. However, the homeostatic drive for sleep—the increasing need for sleep the longer we stay awake—arises from other brain systems and mechanisms (like adenosine buildup and related networks). Even without a functioning SCN, sleep pressure can still build and sleep can occur, though its timing may become irregular. So the statement is false: SCN damage disrupts circadian timing but does not eliminate the homeostatic process that governs sleep need.

The SCN is the master clock that sets circadian timing, coordinating when we are awake and asleep over a 24-hour cycle. Damage to the SCN disrupts these circadian rhythms, causing loss of a stable daily pattern. However, the homeostatic drive for sleep—the increasing need for sleep the longer we stay awake—arises from other brain systems and mechanisms (like adenosine buildup and related networks). Even without a functioning SCN, sleep pressure can still build and sleep can occur, though its timing may become irregular. So the statement is false: SCN damage disrupts circadian timing but does not eliminate the homeostatic process that governs sleep need.

More practice questions