The nurse is preparing to measure the visual acuity of a client. The nurse should recognize that which of the following cranial nerve should be assessed:
VI
V
II
III
The Correct Answer is C
A. VI
Cranial Nerve VI is the Abducent Nerve, which controls the movement of the lateral rectus muscle, allowing the eye to move laterally (abduct). Dysfunction of this nerve can cause difficulty in moving the eye outward.
B. V
Cranial Nerve V is the Trigeminal Nerve. It has both sensory and motor functions. Sensory functions include providing sensation to the face, sinuses, and teeth. Motor functions include controlling the muscles used for chewing (mastication).
C. II
Cranial Nerve II is the Optic Nerve. It is purely a sensory nerve responsible for vision. The optic nerve carries visual information from the retina of the eye to the brain.
D. III
Cranial Nerve III is the Oculomotor Nerve. It is primarily a motor nerve but also has some autonomic functions. It controls most of the eye movements (except lateral movement controlled by VI) and regulates the size of the pupil and the shape of the lens in the eye for focusing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Nystagmus in extreme superior gaze: Nystagmus is an involuntary eye movement and is not a normal finding, especially in extreme superior gaze. Nystagmus can be indicative of neurological issues and requires further evaluation.
B. Slight amount of lid lag when moving the eyes from a superior to an inferior position: Lid lag refers to a delay in the downward movement of the upper eyelid during eye movement. This can be a sign of hyperthyroidism and is not a normal finding.
C. Parallel movement of both eyes: This is the correct answer. During the diagnostic positions test, the nurse should observe parallel movement of both eyes in all directions, indicating normal extraocular muscle function and coordination.
D. Convergence of the eyes: Convergence refers to the inward movement of both eyes when focusing on a close object. While convergence is a normal phenomenon, it is not specifically assessed during the diagnostic positions test, which primarily evaluates the range of motion and coordination of the extraocular muscles.
Correct Answer is C
Explanation
A. Discuss that a light will be directed at the neck to observe for pulsations of the artery:
This choice is incorrect. Directing light at the neck is not a standard method for assessing carotid artery pulsations. The carotid artery is usually assessed by palpation to feel the pulse rather than visual observation.
B. Instruct the client to take a deep breath and "hold" while the nurse briefly auscultates:
This choice is incorrect. Auscultation is typically not used to assess carotid artery pulsations. Palpation (feeling the pulse) is the primary method used for this assessment.
C. Demonstrate that both arteries will be palpated simultaneously to compare amplitude:
This choice is correct. Palpating both carotid arteries simultaneously allows the nurse to compare the amplitude (strength) of the pulses. This comparison helps in assessing the symmetry of the pulses and ensures there are no significant differences between the two sides, which could indicate vascular abnormalities.
D. Show the client the diaphragm of the stethoscope that will be placed on the neck:
This choice is incorrect. The diaphragm of the stethoscope is not typically used for palpating pulses. Palpation involves using the fingertips to feel the pulse and assess its strength and regularity.
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