When testing the function of the oculomotor, trochlear, and abducens nerves, which parameter does a nurse check to determine their function?

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Question 1 of 5

When testing the function of the oculomotor, trochlear, and abducens nerves, which parameter does a nurse check to determine their function?

Correct Answer: B

Rationale: The correct answer is B: Eye movements. When assessing the oculomotor, trochlear, and abducens nerves, evaluating eye movements is crucial. This assessment includes checking the pupils for size, regularity, equality, light reactions, accommodation, and extraocular movements in various gaze positions. Tongue symmetry is primarily used to evaluate cranial nerve XII (hypoglossal nerve) function. Facial symmetry is a key indicator of cranial nerve VII (facial nerve) function. The corneal reflex assesses sensory afferents in cranial nerve V (trigeminal nerve) and motor efferents in cranial nerve VII (facial nerve).

Question 2 of 5

A nurse is preparing a female client for a rectal examination. Into which position does the nurse assist the client?

Correct Answer: D

Rationale: For a rectal examination in a female client, the nurse should assist the client into the left lateral position. This position allows easier access to the rectal area, facilitating the examination. The lithotomy position is used for examining the genitalia and rectum in females, not solely for a rectal examination. The standing position is not appropriate for a rectal examination as it does not provide the necessary access. The supine position would hinder the effectiveness of a rectal examination as it does not optimize access to the rectal area.

Question 3 of 5

When inspecting the client's eyelids for ptosis, the nurse is checking for which abnormality?

Correct Answer: A

Rationale: When a nurse inspects a client's eyelids for ptosis, they are checking for drooping. Ptosis is a condition characterized by the drooping of the eyelids and can be associated with various disorders such as myasthenia gravis, dysfunction of cranial nerve III, and Bell's palsy. Pupil dilation and constriction are assessed using a flashlight to check pupillary response. Deviation of ocular movements is evaluated by leading the client's eyes through the six cardinal positions of gaze. Therefore, in this scenario, the correct answer is 'Drooping' as it specifically relates to the abnormality associated with ptosis.

Question 4 of 5

While assisting with data collection of an adult client, a nurse asks the client to identify various odors. In this technique, which cranial nerve is the nurse assessing?

Correct Answer: C

Rationale: The correct answer is 'Olfactory.' The olfactory nerve is responsible for the sense of smell. Assessing this nerve involves testing the client's ability to identify various odors. Loss of smell, head trauma, abnormal mental status, and suspected intracranial lesions are conditions where testing the olfactory nerve is essential. The optic nerve is evaluated for visual acuity and visual fields. The abducens nerve is usually assessed alongside the oculomotor and trochlear nerves, focusing on pupil size, regularity, light reactions, accommodation, and extraocular movements. The hypoglossal nerve is examined by inspecting the tongue, not by assessing the sense of smell.

Question 5 of 5

A nurse assisting with data collection is preparing to assess the optic nerve. The nurse performs this examination by using which technique?

Correct Answer: A

Rationale: The correct technique to assess the optic nerve is by testing visual acuity and visual fields through confrontation. Visual acuity involves assessing the clarity of vision, which directly correlates with the function of the optic nerve. Inspecting the eyelids for ptosis is unrelated to optic nerve assessment. Assessing pupil constriction is more related to the assessment of cranial nerves controlling eye movements, particularly the oculomotor nerve. Assessing ocular movements is related to testing the abducens, oculomotor, and trochlear nerves, not specifically the optic nerve.

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