A nurse documents that the client has a normal pupillary light reflex. The nurse should recognize that this reflex indicates which of the following?
The eyes converge to focus on the light.
The eye focuses the image in the center of the pupil.
Dilation of both pupils occurs in response to bright light.
Constriction of both pupils occurs in response to bright light.
The Correct Answer is D
A. The eyes converge to focus on the light.
This statement refers to the convergence reflex, where both eyes move medially (towards each other) to maintain single binocular vision when focusing on a near object. It is not related to the pupillary light reflex, which involves changes in pupil size in response to light.
B. The eye focuses the image in the center of the pupil.
This choice does not accurately describe the pupillary light reflex. The pupillary light reflex involves constriction of the pupil in response to light, not focusing an image in the center of the pupil.
C. Dilation of both pupils occurs in response to bright light.
This statement is incorrect. In response to bright light, the pupils should constrict, not dilate. Dilation of pupils in bright light could indicate an abnormal response, such as in cases of certain neurological conditions or drug use.
D. Constriction of both pupils occurs in response to bright light.
This choice is correct. In the pupillary light reflex, both pupils constrict when exposed to bright light. This response is a protective mechanism to prevent excessive light from entering the eyes, ensuring optimal visual acuity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Maxillary sinusitis:
Explanation: The client's symptoms of facial pain, fever, malaise, swollen turbinates, purulent nasal discharge, and dull, throbbing pain in the cheeks and teeth on the right side, especially when palpated, are indicative of maxillary sinusitis. Maxillary sinusitis refers to the inflammation of the maxillary sinuses, which are located in the cheek area. The symptoms described align with a bacterial infection in this sinus.
B. Nasal polyps:
Explanation: Nasal polyps are soft, noncancerous growths on the lining of the nasal passages or sinuses. While they can cause nasal congestion and a runny nose, they do not typically present with the specific symptoms mentioned in the scenario, such as facial pain, fever, and purulent discharge.
C. Frontal sinusitis:
Explanation: Frontal sinusitis involves inflammation of the frontal sinuses located in the forehead area. Symptoms may include forehead pain, headache, and nasal discharge. However, the described symptoms in the scenario (dull, throbbing pain in the cheeks and teeth on the right side) are more characteristic of maxillary sinusitis.
D. Posterior epistaxis:
Explanation: Posterior epistaxis refers to a nosebleed that originates from the back of the nose, often due to bleeding from the sphenopalatine artery. While nosebleeds can cause blood drainage into the throat and result in a metallic taste, the other symptoms described in the scenario, such as facial pain, fever, and purulent discharge, are not indicative of posterior epistaxis.
Correct Answer is B
Explanation
A. AV node - SA node - bundle of His - bundle branches:
This sequence is incorrect. The SA node (sinoatrial node) initiates the electrical impulse in the heart, followed by the AV node (atrioventricular node), bundle of His, and then the bundle branches.
B. SA node - AV node - bundle of His - bundle branches:
This sequence is correct. The electrical stimulus of the cardiac cycle starts at the SA node, which is the natural pacemaker of the heart. From the SA node, the impulse travels to the AV node, then to the bundle of His, and finally to the bundle branches, which distribute the impulse to the ventricles, causing them to contract.
C. Bundle of His - AV node - SA node - Erb's Point:
This sequence is incorrect. Erb's Point is a point on the chest where heart sounds S2 and S3 can be heard most distinctly.
D. AV node - SA node - bundle of His - Erb's Point:
This sequence is incorrect. The AV node comes after the SA node in the electrical conduction system of the heart. Erb's Point is not a part of the normal cardiac conduction pathway; it is a location for auscultation on the chest.
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