Which system is impaired by depressants, such as alcohol?

Depressants, including alcohol, primarily impair the central nervous system (CNS). The CNS comprises the brain and spinal cord, which are critical for processing information, making decisions, and controlling bodily functions. When depressants are consumed, they can slow down brain activity, affecting the individual's cognitive functions, motor skills, and overall coordination. This results in diminished reaction times, impaired judgment, and a reduced ability to perform tasks that require alertness.

While the other systems mentioned—digestive, respiratory, and cardiovascular—can be influenced by alcohol consumption, it is the central nervous system that experiences the most significant impairment in terms of immediate effects like sedation and slowed reactions. This is why understanding the impact of depressants on the CNS is essential for safe driving and overall functioning.