Question

what is typically the underlying cause of adult sleep apnea?
multiple choice
a deep sleep state in which respiration markedly slows
unresponsiveness of central chemoreceptors
nasal congestion
obstruction of upper airways

Explanation:

Sleep apnea in adults is often due to physical blockages. Nasal congestion is a temporary issue. A deep sleep state with slowed respiration is not the main cause. Unresponsiveness of central chemoreceptors is more related to central sleep apnea (less common). Obstruction of upper airways (like from tissue relaxation) is the typical cause of obstructive sleep apnea (most common type in adults).

Answer:

D. Obstruction of upper airways