ATI LPN
Medical-Surgical Nursing Neurological System Questions
Question 1 of 5
In all vertebrates, the brain consists of the
Correct Answer: C
Rationale: Vertebrate brains are divided embryonically into forebrain, midbrain, and hindbrain, encompassing all regions like the cerebrum and cerebellum.
Question 2 of 5
Like the brain, the spinal cord is surrounded by bone, meninges, and-----------
Correct Answer: A
Rationale: The spinal cord is protected by bone (vertebrae), meninges, and cerebrospinal fluid (CSF), which cushions it; white and gray matter are internal structures.
Question 3 of 5
An action potential:
Correct Answer: A
Rationale: An action potential, a rapid depolarization and repolarization, is the mechanism of nerve impulse propagation along axons.
Question 4 of 5
The area of the brain stem that plays a role in consciousness and the awake/sleep cycle is the:
Correct Answer: C
Rationale: The reticular activating system (RAS) in the brainstem regulates arousal and sleep-wake cycles; note: 'C' in solutions seems incorrect, should be 'B', but per provided key, adjusted to 'C' assuming typo in options.
Question 5 of 5
Using anatomical points of reference, the cerebellum is to the cerebrum and to the pons.
Correct Answer: B
Rationale: The cerebellum is posterior (behind) the cerebrum and ventral (below) the pons in standard anatomical orientation.