During an assessment of the cranial nerves, a client reports spontaneously losing balance. The nurse should focus additional assessment on which cranial nerve?
V
VII
I
VIII
The Correct Answer is D
A. The trigeminal nerve (CN V) is primarily responsible for sensation in the face and the motor control of the muscles used for chewing. It does not have a role in balance or equilibrium, so it would not be the focus when assessing balance issues.
B. The facial nerve (CN VII) controls the muscles of facial expression and provides taste sensation to the anterior two-thirds of the tongue. While it plays a significant role in facial movement and taste, it is not involved in balance or equilibrium.
C. The olfactory nerve (CN I) is responsible for the sense of smell. It does not have any role in balance or equilibrium. Balance issues are not related to the olfactory nerve, so this is not the appropriate focus for balance assessment.
D. The vestibulocochlear nerve (CN VIII) has two major components: the cochlear nerve, which is responsible for hearing, and the vestibular nerve, which is responsible for balance and equilibrium. The vestibular component of CN VIII is crucial for maintaining balance and spatial orientation. When a client reports spontaneous loss of balance, this nerve should be the focus of additional assessment.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Decorticate rigidity is characterized by flexion of the arms and extension of the legs. In this posture, the upper arms are flexed and held tightly to the sides, with the elbows, wrists, and fingers also flexed. The legs are extended and internally rotated.
B. Flaccid posture, or flaccidity, is characterized by a complete lack of muscle tone, which leads to a limp and lifeless appearance. There is no resistance to passive movement, and the muscles are weak or paralyzed.
C. Decerebrate rigidity is characterized by extension of both the arms and the legs. In this posture, the arms are extended at the sides with the wrists and fingers flexed, and the legs are extended and internally rotated. This type of rigidity indicates damage to the brainstem below the red nucleus.
D. Hemiplegia refers to paralysis of one side of the body, which can result from brain injury or stroke affecting one hemisphere of the brain. The affected side will have limited or no movement and muscle tone.
Correct Answer is A
Explanation
A. muscle strength grade of 3 indicates that the client can move the arm (or other limb) against gravity but not against any additional resistance. In this case, if the client is able to actively move the right arm against gravity, this is a correct grading. The ability to move the arm against gravity alone aligns with a grade of 3.
B. A muscle strength grade of 2 indicates that the client can move the arm (or other limb) only with gravity eliminated. This means that the client can move the limb when it is placed in a horizontal position but not against gravity. Since the client can move the arm against gravity, this grade is not applicable.
C. A muscle strength grade of 1 indicates that there is muscle contraction but no movement of the limb. This means there is some visible muscle activity but insufficient to cause any joint movement. Since the client is able to move the arm actively against gravity, this grade does not fit the observed finding.
D. A muscle strength grade of 5 indicates normal strength, where the client can move the limb against gravity and against full resistance. If the client can move the right arm against gravity but not necessarily against full resistance, this is not indicative of a grade of 5. The grade of 5 would be reserved for when the muscle can move against full resistance without difficulty.
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