During an assessment of the cranial nerves (CNS), the nurse finds the following asymmetry when the client smiles or frowns, uneven lifting of the eyebrows, and escape of air when the nurse presses against the right puffed cheek. The nurse recognized that these findings indicate dysfunction of which cranial nerve(s)?
Motor component of CN X and sensory component of CN VII
Motor and sensory component of CN XI
Motor component of CN IV
Motor component of CN VII
The Correct Answer is D
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. The basal ganglia are involved in motor control and learning but not specifically in controlling voluntary movement.
B. Motor pathways do not directly synapse in the thalamus; the thalamus serves as a relay station for sensory information.
C. The cerebellum is primarily involved in coordination, balance, and muscle control, not in speech and emotions.
D. The hypothalamus plays a crucial role in regulating body temperature, controlling hunger, thirst, fatigue, and regulating sleep cycles.
Correct Answer is B
Explanation
A. A bone spur is a bony projection often caused by joint damage, but it does not typically produce audible crunching or grating sounds.
B. Crepitation refers to a crunching, grating, or popping sound or sensation that occurs with movement of a joint. It's often associated with conditions like osteoarthritis.
C. Tendonitis involves inflammation of a tendon and may cause pain or tenderness, but it does not typically produce audible sounds like crepitation.
D. Fluid in the knee joint might cause swelling and limited movement, but it does not usually produce audible crunching or grating sounds.
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