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 C
Explanation
A. Estimating the degree of flexion and extension in each joint primarily assesses the range of motion, not specifically muscle strength.
B. Measuring the degree of force required to overcome joint flexion or extension may assess resistance but doesn't directly evaluate muscle strength.
C. Applying an opposing force when the individual puts a joint in flexion or extension is an accurate method to assess muscle strength, as it evaluates the force the muscle can generate against resistance.
D. Observing muscles for contraction while lifting a heavy object evaluates muscle usage but doesn’t offer a standardized way to assess muscle strength.
Correct Answer is C
Explanation
A. The condyle of the mandible is the rounded protuberance at the end of the mandible bone but doesn't refer to the joint.
B. The zygomatic arch of the temporal bone is part of the skull structure and not directly associated with the mandibular joint.
C. The temporomandibular joint (TMJ) is the joint where the mandible articulates with the temporal bone of the skull, allowing for jaw movement and chewing.
D. The intervertebral foramen is a space between vertebrae through which spinal nerves exit the spinal cord.
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