A 54 year-old client diagnosed with Bipolar disorder is clenching his jaw closed to avoid taking a prescribed oral medication. The nurse can use this observation to confirm the client is demonstrating motor function of which cranial nerve?
Vagus
Facial
Glossopharygeal
Trigeminal
The Correct Answer is D
A. Vagus: The vagus nerve (cranial nerve X) is involved in regulating autonomic functions, such as heart rate and digestion. It does not play a significant role in controlling jaw movements or clenching.
B. Facial: The facial nerve (cranial nerve VII) controls facial expressions, such as smiling or frowning, and also contributes to taste sensation in the anterior two-thirds of the tongue. While it is related to facial motor function, it does not control the jaw muscles responsible for clenching.
C. Glossopharyngeal: The glossopharyngeal nerve (cranial nerve IX) is involved in taste sensation on the posterior one-third of the tongue, as well as in swallowing and salivation. It does not control the jaw muscles used for clenching.
D. Trigeminal: The trigeminal nerve (cranial nerve V) is responsible for sensation in the face and motor functions related to chewing. It innervates the muscles of mastication, including those involved in clenching the jaw. The client’s jaw clenching is a direct manifestation of motor function associated with the trigeminal nerve.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Glenohumeral joint: The glenohumeral joint is the shoulder joint. Pain with chewing is unlikely to be related to issues with the shoulder joint, as this joint is not involved in the chewing process.
B. Sternoclavicular joint: The sternoclavicular joint is where the clavicle meets the sternum. Problems here might affect shoulder and chest movement, but they would not typically cause pain specifically related to chewing.
C. Temporomandibular joint (TMJ): The TMJ is directly involved in the movement of the jaw, which is essential for chewing. Chronic pain during chewing often indicates a problem with the TMJ, such as TMJ disorder, which can cause pain, clicking, and other issues when moving the jaw.
D. Acromioclavicular joint: The acromioclavicular joint is located at the top of the shoulder where the clavicle meets the acromion of the scapula. This joint primarily affects shoulder movement, not chewing.
Correct Answer is ["A","C","D"]
Explanation
A) Trochlear: The trochlear nerve (CN IV) is responsible for innervating the superior oblique muscle, which helps control the downward and inward movement of the eye.
B) Optic: The optic nerve (CN II) is primarily involved in vision and visual acuity, not in the movement of the eye. It transmits visual information from the retina to the brain.
C) Oculomotor: The oculomotor nerve (CN III) controls most of the extraocular muscles, including those responsible for eye movement (superior rectus, inferior rectus, medial rectus, and inferior oblique) and also controls pupil constriction.
D) Abducens: The abducens nerve (CN VI) controls the lateral rectus muscle, which is responsible for the outward movement of the eye.
E) Facial: The facial nerve (CN VII) controls the muscles of facial expression and is not involved in eye movements.
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