Which part of the brain is involved in keeping a person awake?
The cerebellum
The amygdala
The reticular activating system
The hypothalamus
The Correct Answer is C
A. The cerebellum is primarily involved in motor control, balance, and coordination rather than regulating wakefulness.
B. The amygdala is involved in emotion regulation, particularly fear and anxiety, rather than maintaining wakefulness.
C. The reticular activating system (RAS) plays a crucial role in maintaining alertness and wakefulness by regulating the sleep-wake cycle and cortical arousal.
D. The hypothalamus plays a role in regulating various autonomic functions and the sleep-wake cycle but is not as directly responsible for maintaining wakefulness as the RAS.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Anxiety disorders, including generalized anxiety disorder, post-traumatic stress disorder, and acute stress disorder, are commonly exacerbated following natural disasters due to the trauma and stress associated with such events.
B. Borderline personality disorder is a long-term pattern of instability in relationships, self-image, and emotions, not directly linked to natural disasters.
C. Schizophrenia is a chronic disorder involving delusions and hallucinations, and its onset is generally not triggered by external stressors such as natural disasters.
D. Bipolar disorder involves mood swings between depression and mania and is typically not caused or worsened by natural disasters.
Correct Answer is C
Explanation
A. Dendrites receive signals from other neurons but do not release chemicals.
B. Axons transmit electrical impulses away from the cell body but do not release chemicals directly.
C. Terminal buttons, located at the end of axons, release neurotransmitters into the synapse between neurons.
D. The cell body maintains the neuron and processes information but does not release chemicals between neurons.
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