Which of the following best describes the test to assess the function of cranial nerve (CN) X?

Correct Answer: D

Rationale: The correct answer is D because cranial nerve X, also known as the vagus nerve, controls the movement of the soft palate and uvula. Asking the patient to say "ahhh" assesses the function of CN X as the soft palate and uvula should elevate symmetrically. A: Observing the patient's ability to articulate specific words does not specifically test CN X function. B: Assessing movement of the hard palate and uvula with the gag reflex primarily tests CN IX (glossopharyngeal nerve). C: Having the patient stick out the tongue and observing for tremors or pulling to one side primarily tests CN XII (hypoglossal nerve).

Correct Answer: B

Rationale: Step 1: Jaundice is characterized by a yellow skin color due to elevated bilirubin levels. Step 2: Yellow color extending up to the iris indicates systemic jaundice, involving the whole body. Step 3: Yellow patches throughout the sclera (Choice A) may not indicate systemic jaundice. Step 4: Skin appearing yellow under low light (Choice C) may not be specific to jaundice. Step 5: Yellow deposits on palms and soles (Choice D) are not typical signs of jaundice. Therefore, Choice B is correct as it reflects systemic jaundice, while the other choices do not fully align with the manifestation of true jaundice.

Correct Answer: B

Rationale: The correct answer is B (XI; asking the patient to shrug her shoulders against resistance). This is the correct choice because the nurse suspects damage to the spinal accessory nerve (CN XI), which innervates the trapezius and sternocleidomastoid muscles. Asking the patient to shrug her shoulders against resistance tests the function of the trapezius muscle, which is innervated by CN XI. This examination helps to assess the integrity of the nerve and its ability to innervate the muscle. Palpating the anterior and posterior triangles (choice A) is not specific to CN XI function. Percussing the sternomastoid and submandibular neck muscles (choice C) is related to CN XII, not CN XI. Assessing for a positive Romberg's sign (choice D) is not relevant to testing the function of CN XI.

Correct Answer: D

Rationale: The correct answer is D: increased intracranial pressure. Papilledema is swelling of the optic disc due to increased pressure in the brain. It is a sign of serious conditions like brain tumors, head trauma, or hydrocephalus. The other choices are incorrect because retinal detachment presents with visual disturbances and floaters (A), diabetic retinopathy with retinal damage due to diabetes (B), and acute-angle glaucoma with sudden eye pain and blurred vision (C). Papilledema specifically indicates increased intracranial pressure, making choice D the correct answer.

Correct Answer: A

Rationale: The correct answer is A: Over the sternum. When testing for skin mobility and turgor in infants, the sternum is the best location. This area is less affected by factors like fat distribution and muscle tone, providing a more accurate assessment of dehydration. The skin should be gently pinched and released to observe how quickly it returns to its normal position - delayed return indicates dehydration. The other choices are incorrect because testing over the forehead, forearms, or abdomen may not provide an accurate assessment due to variations in fat distribution, muscle tone, or skin elasticity in those areas.

Correct Answer: D

Rationale: The correct answer is D: mandible. The temporomandibular joint is located just below the temporal artery and it connects the mandible (lower jaw) to the temporal bone. This joint allows for movement of the jaw during actions like chewing and speaking. Choices A, B, and C are incorrect because the temporomandibular joint is not located near the hyoid bone (A), the vagus nerve (B), or the tragus of the ear (C). These structures are not directly associated with the temporomandibular joint's anatomical location and function.

Correct Answer: B

Rationale: The correct answer is B because unequal pupillary constriction in response to light is abnormal and may indicate nerve damage or neurological issues. A: Decrease in tear production is common with age. C: Arcus senilis is a normal age-related change. D: Loss of hair at the outer line of the eyebrows is also a common age-related change.

Correct Answer: B

Rationale: Correct Answer: B Rationale: 1. Whispering two-syllable words ensures a low volume, requiring the patient to focus on clarity. 2. Asking the patient to repeat tests their ability to hear and understand the whispered words accurately. 3. Whispering helps eliminate the influence of lip-reading, ensuring accurate assessment. Summary: A: Shielding the lips while speaking would hinder the patient's ability to hear clearly. C: Placing a finger in the ear would not be appropriate as it could affect the accuracy of the test. D: Standing at a specific distance does not ensure accurate assessment of hearing ability.

Correct Answer: C

Rationale: The correct answer is C: A thin, translucent membrane. In elderly patients, the tympanic membrane tends to become thinner and more translucent due to age-related changes. This is considered a normal finding as it is a common occurrence in older individuals. The other choices are incorrect because: A) Loss of high-tone frequency hearing is not a normal finding in an ear examination of an elderly patient, as age-related hearing loss typically affects high frequencies. B) Increased elasticity of the pinna is not a common age-related change and may indicate a different issue. D) A shiny pink tympanic membrane is not a typical finding in an elderly patient and could suggest inflammation or infection instead of a normal age-related change.