A nurse is preparing to measure the visual acuity of a client. The nurse should recognize that which nerve should be assessed?
II
I
VI
IV
The Correct Answer is A
A) II:
This is the correct answer. The optic nerve (cranial nerve II) is responsible for visual acuity, as it transmits visual information from the retina to the brain. When assessing visual acuity, the nurse is evaluating the function of the optic nerve, which is responsible for the sense of vision. Therefore, cranial nerve II should be assessed during a visual acuity exam.
B) I:
This is incorrect. The olfactory nerve (cranial nerve I) is responsible for the sense of smell, not vision. Visual acuity is not related to the olfactory nerve, so it is not involved in this type of assessment.
C) VI:
This is incorrect. The abducens nerve (cranial nerve VI) controls the lateral rectus muscle of the eye, which is responsible for outward eye movement. While cranial nerve VI plays a role in eye movement, it is not directly involved in measuring visual acuity, which pertains to the function of the optic nerve.
D) IV:
This is incorrect. The trochlear nerve (cranial nerve IV) controls the superior oblique muscle, which helps with eye movement, specifically downward and inward eye movements. This nerve is not involved in measuring visual acuity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) A blend of fibrous, glandular, and adipose tissues: The internal structure of the breast is composed of a mixture of fibrous, glandular, and adipose tissues. The glandular tissue is responsible for producing milk, the fibrous tissue provides structural support, and the adipose tissue stores fat. This combination of tissues gives the breast its shape and functional capabilities, making it a complex and dynamic organ.
B) Primarily milk ducts which function as milk reservoirs: While the breast does contain milk ducts that transport milk from the glandular tissue to the nipple, it is not primarily composed of these ducts. The milk ducts are an important component, but they do not make up the majority of the breast's internal structure. The blend of different tissues is what defines the breast’s anatomy.
C) Primarily muscle with small amounts of fibrous tissue: The breast itself does not contain significant muscle tissue. The primary muscles related to the breast are the pectoral muscles, which lie beneath the breast tissue but are not part of the internal breast structure. The internal breast primarily consists of fibrous, glandular, and adipose tissues, not muscle.
D) Glandular tissue to attach the breast to the chest wall: The glandular tissue is crucial for milk production, but it does not function to attach the breast to the chest wall. The attachment of the breast to the chest wall is facilitated by the Cooper's ligaments, which are fibrous bands that help maintain structural integrity. Glandular tissue primarily serves the function of milk production.
Correct Answer is D
Explanation
A) Crackles: Crackles are abnormal lung sounds often associated with conditions such as pneumonia, heart failure, or pulmonary edema. They result from fluid in the airways or alveoli. However, crackles are not typically the primary finding in pleuritis, which involves inflammation of the pleura.
B) Stridor: Stridor is a high-pitched wheezing sound caused by an obstruction or narrowing of the upper airway, often seen in conditions such as croup or anaphylaxis. It is not characteristic of pleuritis, which involves inflammation of the pleura and not airway obstruction.
C) Dyspnea: Dyspnea, or difficulty breathing, is a common symptom in many respiratory conditions, including pleuritis. While pleuritis can lead to discomfort during breathing, dyspnea itself is not a sound that would be auscultated. It’s a subjective feeling that would be noted during the client’s history or verbal report, rather than an auscultatory finding.
D) Friction rub: A pleural friction rub is the most expected finding when auscultating a client with pleuritis. This sound occurs when the inflamed pleural layers rub against each other during breathing, producing a grating, scratchy sound. The nurse will typically hear this sound best on inspiration or expiration and it is the hallmark sign of pleuritis. The presence of a friction rub indicates the pleural inflammation characteristic of this condition.
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