During the assessment of a client's head and neck, the nurse observes the client's facial expressions and the face for symmetry and movement. Which cranial nerve is the nurse assessing?
VII
V
III
VI
The Correct Answer is A
A) VII: The facial nerve (cranial nerve VII) is responsible for controlling the muscles of facial expression. By assessing facial symmetry and movement, the nurse evaluates the integrity and function of this nerve, which is crucial for activities such as smiling, frowning, and raising eyebrows.
B) V: The trigeminal nerve (cranial nerve V) is primarily responsible for sensation in the face and motor functions such as chewing. While it plays a role in facial movement, it does not specifically assess facial expressions.
C) III: The oculomotor nerve (cranial nerve III) controls eye movement and pupil constriction. It does not directly influence facial expressions, so it is not the nerve being assessed in this context.
D) VI: The abducens nerve (cranial nerve VI) is responsible for lateral eye movement. It is unrelated to facial expression or symmetry and is not the focus of this assessment.
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Correct Answer is D
Explanation
A) Symmetry of lesions: While asymmetry can be a concern when assessing moles, it is not the most critical indicator when a lesion has already shown signs of burning and bleeding. Symmetry is one aspect of the overall assessment but does not immediately indicate danger in this scenario.
B) Border regularity: Irregular borders can suggest malignancy; however, the presence of burning and bleeding is a more pressing sign that warrants immediate attention. While border irregularity is important to assess, it is not as concerning as changes in color or the presence of symptoms like bleeding.
C) Diameter less than 6 mm: A diameter less than 6 mm is generally considered a normal size for moles and is not indicative of malignancy on its own. In this case, the burning and bleeding of the mole are more significant findings that raise concern, regardless of its size.
D) Color variation: Color variation in a pigmented lesion is a significant danger sign, as it can indicate changes that may suggest malignancy, especially when combined with other concerning symptoms like burning and bleeding. Variability in color may indicate the presence of different cell types and is a key factor in assessing the risk of melanoma.
Correct Answer is A
Explanation
A) Idiopathic neuropathy has no known cause: This statement is accurate, as idiopathic neuropathy refers to nerve damage for which no specific cause can be identified despite thorough investigation. The term "idiopathic" literally means "of unknown origin," indicating that the underlying mechanism remains unclear.
B) Idiopathic neuropathy is hereditary in nature: While some neuropathies can be hereditary, idiopathic neuropathy itself is not classified as hereditary since it lacks a defined genetic cause. Hereditary neuropathies are specific types that have a genetic basis.
C) Idiopathic neuropathy is caused by nutritional deficits: Nutritional deficits can lead to various types of neuropathy, but idiopathic neuropathy specifically is characterized by the absence of a known cause. Therefore, attributing it to nutritional deficits would be incorrect.
D) Idiopathic neuropathy is caused by disease or illness: While certain diseases can cause neuropathy, the key characteristic of idiopathic neuropathy is that no specific disease or illness has been identified as the cause. This differentiates it from other neuropathies that are secondary to identifiable conditions.