Correct Answer: A

Rationale: The correct answer is A: The presence of tears along the inner canthus. This is a normal finding during an eye examination as tears are produced by the lacrimal gland and drain into the nasolacrimal duct, which exits at the inner canthus. This indicates proper tear production and drainage. Incorrect choices: B: A blocked nasolacrimal duct in a newborn infant - This would present as excessive tearing and discharge. C: A slight swelling over the upper lid and along the bony orbit if the patient has a cold - This could indicate inflammation due to infection. D: The absence of drainage from the puncta when the inner orbital rim is pressed - This would suggest an issue with the lacrimal drainage system.

Correct Answer: A

Rationale: The correct answer is A: An optic disc that is a yellow-orange colour. This is a normal finding because the optic disc typically appears yellow-orange due to the presence of nerve fibers. The yellow-orange color is due to the absence of blood vessels in this area. This is a normal anatomical characteristic of the optic disc. Option B is incorrect because blurred optic disc margins can indicate pathology such as papilledema. Option C is incorrect because the presence of pigmented crescents in the macular area can indicate a condition like myopic degeneration, not a normal finding. Option D is incorrect because the macula is normally located temporally, not nasally, to the optic disc.

Correct Answer: C

Rationale: The correct answer is C: decreased ability to identify odors. As people age, their sense of smell tends to decline due to changes in the olfactory system. This is a common phenomenon in older adults and can impact their overall quality of life. The other choices are incorrect because hypertrophy of the gums (A) is not a typical finding in older adults, increased production of saliva (B) is not directly related to aging, and finer and less prominent nasal hair (D) is not a definitive characteristic of older age.

Correct Answer: D

Rationale: The correct answer is D. At 18 months, it is expected for a child to have erupted around 16 deciduous teeth. The rationale for this answer is based on dental development milestones. By age 3, most children should have their full set of 20 primary teeth. Therefore, the nurse should inform the mother that it is normal for an 18-month-old to have around 16 teeth. Choice A is incorrect as comparing the mother's teeth at that age is irrelevant to the child's dental development. Choice B is incorrect because all 20 deciduous teeth should be present by age 3, not 4. Choice C is incorrect as having 12 teeth at 18 months is below the expected number of erupted teeth for that age.

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).