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) Changes in peripheral vision in response to light: While peripheral vision is important in a comprehensive eye assessment, it is not specifically evaluated through the PERRLA acronym. PERRLA focuses on how the pupils respond to light and accommodation, not on peripheral vision changes.
B) Involuntary blinking in the presence of bright light: Involuntary blinking is part of a reflex action known as the blink reflex, which helps protect the eyes from bright lights and foreign objects. However, this response is not what the "A" in PERRLA refers to, which is more specifically about pupillary reactions to focus.
C) Pupillary dilation when looking at a near object: When focusing on a near object, the pupils actually constrict rather than dilate. This process, known as accommodation, is important for clear vision at close distances but does not pertain to the dilation of pupils.
D) Pupillary constriction when looking at a near object: The "A" in PERRLA stands for accommodation, which specifically refers to the pupils constricting when a person looks at a nearby object. This reaction helps the eyes focus properly and is a normal finding in a healthy neurological assessment. Thus, option D accurately describes the "A" in the PERRLA assessment.
Correct Answer is B
Explanation
A) The patient's integumentary system is within normal limits for his age: While thinning skin and decreased turgor can be common in older adults, the specific combination of findings, including the patient feeling cold, suggests that further investigation is warranted rather than assuming they are normal.
B) The patient may have a metabolic condition causing him to feel cold: Thin skin and non-elastic turgor can be indicative of aging, but the sensation of always feeling cold may point to an underlying metabolic condition, such as hypothyroidism or poor circulation, which can affect thermoregulation.
C) The patient has abnormal thinning of skin: While skin thinning is common in older adults, it is not necessarily "abnormal" in the context of aging. However, in conjunction with other symptoms like non-elastic turgor and cold sensitivity, it may warrant further evaluation.
D) The patient should have elastic turgor: In older adults, it is common to see decreased elasticity and turgor of the skin. Therefore, expecting the patient to have elastic turgor may not be appropriate, as it reflects the natural aging process rather than a healthy standard.