The nurse is performing the diagnostic positions test (6 Cardinal Gazes). Which result is a normal finding?

A. XI: Cranial nerve XI, also known as the accessory nerve, is responsible for innervating the sternocleidomastoid and trapezius muscles, which are involved in shoulder and head movement. It does not play a role in tongue movement.

B. V: Cranial nerve V, the trigeminal nerve, is responsible for sensation in the face and motor functions such as biting and chewing. While it is important for overall oral sensation, it does not control tongue movement.

C. XII: Cranial nerve XII, the hypoglossal nerve, is responsible for motor control of the tongue muscles. When the patient sticks out their tongue, the nurse can assess the function of this nerve by observing the tongue's position, movement, and any signs of weakness or atrophy, which can indicate nerve damage.

D. VII: Cranial nerve VII, the facial nerve, is responsible for the muscles of facial expression and taste sensations from the anterior two-thirds of the tongue. Although it contributes to some oral functions, it is not directly involved in the movement of the tongue itself.

A. Thyroid: The thyroid gland produces thyroxine (T4) and triiodothyronine (T3), which are essential hormones that regulate metabolism, growth, and development. An elevated T4 level typically indicates hyperthyroidism or other thyroid disorders, making it necessary to assess the function and health of the thyroid gland.

B. Parathyroid: The parathyroid glands regulate calcium levels in the blood through the secretion of parathyroid hormone (PTH). They do not produce T4 or directly influence thyroid hormone levels, so assessing the parathyroid glands would not be relevant in the context of elevated T4.

C. Adrenal: The adrenal glands produce hormones such as cortisol, aldosterone, and adrenaline. While adrenal function can impact overall hormonal balance in the body, they are not directly involved in the production of thyroxine (T4), making them unrelated to the assessment for elevated T4 levels.

D. Parotid: The parotid glands are major salivary glands that secrete saliva. They do not play a role in thyroid hormone production or regulation, so assessing the parotid glands would not be appropriate when investigating elevated T4 levels.