A mother brings her 2-month-old daughter in for an examination and says, "My daughter rolled over against the wall, and now I have noticed that she has this spot that is soft on the top of her head. Is something terribly wrong?" How should the nurse respond?

A. Is impaired in a patient with cataracts: Cataracts primarily cause lens opacity, leading to blurry vision and reduced acuity. They do not directly affect extraocular muscle function, which is controlled by cranial nerves rather than the lens.

B. Is always decreased in the older adult: Aging can cause minor changes in eye movement speed and coordination, but significant impairment is not inevitable. Extraocular muscle function remains intact unless affected by neurological conditions such as cranial nerve palsy.

C. Is stimulated by cranial nerves (CNS) I and II: Cranial nerve I (olfactory) is responsible for smell, and cranial nerve II (optic) transmits visual signals to the brain. Neither nerve controls eye movement, which is instead governed by different cranial nerves.

D. Is stimulated by cranial nerves III, IV, and VI: The oculomotor (III), trochlear (IV), and abducens (VI) nerves control extraocular muscle movement. They coordinate eye positioning, alignment, and smooth tracking, ensuring proper function of the visual system.

A. Maxillary sinusitis: The symptoms described, including facial pain, fever, malaise, swollen turbinates, purulent nasal discharge, and dull, throbbing pain in the cheeks and teeth, are consistent with maxillary sinusitis. The maxillary sinuses are located in the cheeks, and inflammation or infection in this area can lead to referred pain in the teeth and facial areas. Tenderness upon palpation of the maxillary sinus area further supports this diagnosis.

B. Posterior epistaxis: Posterior epistaxis refers to bleeding from the back of the nasal cavity. While it can be associated with nasal pain, it does not typically present with fever, malaise, purulent discharge, or sinus-related pain.

C. Frontal sinusitis: Frontal sinusitis involves inflammation of the frontal sinuses located above the eyes, which may cause pain in the forehead and around the eyes. The patient's complaint of cheek and teeth pain is more indicative of maxillary sinusitis rather than frontal sinusitis.

D. Nasal polyps: Nasal polyps are non-cancerous growths that can occur in the nasal passages or sinuses, often leading to obstruction and difficulty breathing. While they can be associated with sinusitis, the acute presentation of fever, malaise, and purulent discharge, along with facial pain, is more indicative of an active infection, such as maxillary sinusitis.