Correct Answer: B

Rationale: The correct answer is B: parotid gland. The parotid gland is located in front of the ear lobe, and swelling below the angle of the jaw is a common sign of parotid gland inflammation. The tenderness and increasing size of the spot also point towards a parotid gland issue. The other choices, such as thyroid gland (A), occipital lymph node (C), and submental lymph node (D), are incorrect as they are not typically associated with the specific symptoms described by the patient. It is essential to consider the location and function of each structure to arrive at the correct diagnosis.

Correct Answer: C

Rationale: The correct answer is C because shining a light across the pupil from the side allows for both direct (ipsilateral) and consensual (contralateral) pupillary constriction to be observed. This technique helps to assess the integrity of the cranial nerves involved in the pupillary light reflex (CN II and III). Direct constriction occurs in the eye exposed to the light, while consensual constriction occurs in the opposite eye. This comprehensive assessment ensures that both pupils are responding appropriately to light stimulation, providing a more accurate evaluation of the reflex. Choice A is incorrect because inspecting for pupillary constriction from directly in front may not adequately assess for consensual constriction in the opposite eye. Choice B is incorrect as asking the patient to follow the penlight in eight directions does not specifically target the pupillary light reflex. Choice D is incorrect as it focuses on accommodation rather than the pupillary light reflex.

Correct Answer: A

Rationale: The correct answer is A: clumped. Acutely infected lymph nodes typically present as clumped due to inflammation and enlargement of multiple nodes in close proximity. This clustering is a result of the immune response to the infection. Choice B: unilateral is incorrect as lymphadenopathy in acute infection can be unilateral or bilateral. Choice C: firm but freely movable is incorrect as acutely infected lymph nodes are usually tender and may not be freely movable due to inflammation. Choice D: hard and nontender is incorrect as acutely infected lymph nodes are usually tender and may not be hard.

Correct Answer: C

Rationale: The correct answer is C: The purpose of cerumen is to protect and lubricate the ear. Cerumen, commonly known as earwax, acts as a natural barrier to prevent dust, debris, and microorganisms from entering the ear canal. It also helps to lubricate the skin in the ear canal and prevent dryness and itching. Choice A is incorrect because sticky, honey-colored cerumen is not necessarily a sign of infection; it can occur due to various factors. Choice B is incorrect as the presence of cerumen does not solely indicate poor hygiene; everyone produces earwax regardless of hygiene practices. Choice D is incorrect as cerumen can sometimes block the ear canal and impair sound transmission rather than aid it.

Correct Answer: C

Rationale: The correct answer is C because lymph nodes are accessible for examination in the head and neck, arms, breasts, and axillae. Lymph nodes are present in these areas where they can be easily palpated and assessed for any signs of inflammation or abnormalities. The other choices are incorrect because they do not include all the areas where lymph nodes are accessible for examination. Choice A does not include the axillae, which is a crucial area for examining lymph nodes in the arms. Choice B does not include the axillae and breasts. Choice D does not include the breasts, which are important areas for lymph node examination in cases of breast cancer or other breast-related conditions.