The student nurse is studying the functioning of the nervous system. Which of the following descriptions of the central nervous system is accurate?
The central nervous system consists of the brain and electrical impulse stimulators.
The central nervous system is made up of the hypothalamus and cerebral nerves.
The central nervous system is made up of the brain and spinal cord.
The central nervous system includes the peripheral and autonomic components.
The Correct Answer is C
A. This option inaccurately includes "electrical impulse stimulators," which is not a recognized component of the central nervous system. The central nervous system comprises the brain and spinal cord.
B. The hypothalamus and cerebral nerves are parts of the nervous system but do not represent the entirety of the central nervous system.
C. The central nervous system consists specifically of the brain and spinal cord, responsible for coordinating and processing sensory information.
D. The peripheral and autonomic components belong to the broader nervous system but are not part of the central nervous system.
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Related Questions
Correct Answer is D
Explanation
A. Dysfunction of the motor component of CN X (vagus nerve) and sensory component of CN VII (facial nerve) would present with different symptoms, such as difficulty swallowing and impaired taste sensation, not the observed facial asymmetry and puffing of cheeks.
B. CN XI (accessory nerve) dysfunction primarily affects the sternocleidomastoid and trapezius muscles and wouldn't cause the observed facial asymmetry.
C. Dysfunction of CN IV (trochlear nerve) leads to issues with downward and inward eye movement, not the facial asymmetry described.
D. Dysfunction of the motor component of CN VII (facial nerve) leads to facial asymmetry during expressions and difficulty controlling facial muscles, which matches the observed findings.
Correct Answer is A
Explanation
A. Vertigo is the sensation of spinning or movement when stationary and is often associated with inner ear problems.
B. Seizure activity involves abnormal electrical activity in the brain and might present with various symptoms but not necessarily the feeling of spinning.
C. Dizziness is a more general term that can include feelings of light-headedness or unsteadiness without a specific spinning sensation.
D. Syncope refers to fainting or loss of consciousness due to decreased blood flow to the brain, not the sensation of spinning.
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