The nurse is listening to the breath sounds of a patient with severe asthma. Air passing through narrowed bronchioles would produce which of these adventitious sounds?

A. II: The optic nerve (cranial nerve II) is responsible for vision, including visual acuity and the afferent limb of the pupillary reflex. Damage to this nerve causes vision loss or visual field defects but does not affect eye movement or positioning.

B. VI: The abducens nerve (cranial nerve VI) innervates the lateral rectus muscle, which abducts the eye. Damage to this nerve results in an inability to move the eye laterally, leading to horizontal diplopia, but it does not cause a "down and out" eye position.

C. III: The oculomotor nerve (cranial nerve III) controls most of the extraocular muscles, including the superior, inferior, and medial rectus muscles, as well as the inferior oblique. It also controls the levator palpebrae superioris and the parasympathetic fibers responsible for pupillary constriction. Damage to cranial nerve III results in ptosis, a "down and out" eye position due to unopposed action of the lateral rectus (cranial nerve VI) and superior oblique (cranial nerve IV), and potentially a dilated pupil.

D. IV: The trochlear nerve (cranial nerve IV) innervates the superior oblique muscle, which depresses and internally rotates the eye. Damage to this nerve typically causes vertical diplopia and difficulty looking downward, especially when reading or descending stairs, but it does not cause a "down and out" eye position at rest.

A. Lymphadenopathy: Enlarged lymph nodes typically indicate an immune response to infection or inflammation. While allergies can cause mild lymph node enlargement due to chronic irritation, they do not directly cause the characteristic facial signs described, such as the transverse nasal crease and allergic shiners.

B. Nasal congestion: Nasal congestion is a symptom rather than a primary diagnosis. Although allergies can cause nasal congestion, the child exhibits additional hallmark signs of allergic rhinitis, including allergic shiners, Dennie-Morgan lines, and a nasal crease, suggesting a chronic allergic process rather than isolated congestion.

C. Upper respiratory infection: Viral upper respiratory infections (URIs) can cause nasal congestion, sneezing, and watery eyes, but they are usually short-lived and accompanied by fever, malaise, or yellow-green nasal discharge. The presence of a nasal crease and allergic shiners suggests a chronic process like allergic rhinitis rather than an acute infection.

D. Chronic allergies: The presence of a transverse nasal crease from frequent "allergic salute" rubbing, dark periorbital circles (allergic shiners) due to venous congestion, and Dennie-Morgan lines (double creases under the eyes) are classic findings in allergic rhinitis. These symptoms, along with watery eyes and clear nasal drainage, strongly indicate a chronic allergic condition rather than an infectious cause.