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Cranial Nerves Exam Prep Questions and Correct
Answers.
What are the 12 cranial nerves? - ANS Olfactory Optic Oculomotor Trochlea Trigeminal - V1, V2, V Abducens Facial Vestibocochlear Glossopharyngeal Vagus Spinal Accessory Hypoglossal Draw and label the parts of the brain that relate to the cranial nerves. - ANS Anterior brain, pons, medulla oblongata correctly labelled. What cranial nerves originate from the anterior brain? - ANS Olfactory Optic Oculomotor Trochlea What cranial nerves originate from the pons? - ANS Trigeminal Abducens Facial Vestibocochlear What cranial nerves originate from the medulla oblongata? - ANS Glossopharyngeal Vagus Spinal Accessory Hypoglossal What cranial nerves are sensory only? - ANS Olfactory Optic Vestibocochlear What cranial nerves are motor only? - ANS Oculomotor Trochlea Abducens Spinal accessory Hypoglossal What cranial nerves are mixed? - ANS Trigeminal
Facial Glossopharyngeal Vagus What cranial nerves have autonomic components? - ANS Vagus Glossopharyngeal Occulomotor What is the cutaneous sensory supply of the cranial nerves? - ANS Scalp, face, neck What is the non cutaneous sensory supply of the cranial nerves? - ANS Oral cavity, cornea, nasal cavity and nasal sinuses, pharynx, larynx, tympanic membrane What it the articular sensory supply of the cranial nerves? - ANS TMJ, cervical vertebrae, atlantooccipital joint What are the motor supply of the cranial nerves? - ANS Muscles of facial expression, mastication, extra-ocular, tongue muscles, larynx, pharynx and cervical muscles What reflexes are cranial nerves involved in? - ANS Visual, auditory, swallowing, gag reflex, sneezing, coughing What is the origin, exit and type of olfactory nerve? - ANS Anterior brain Cribiform Plate Sensory What is the origin, exit and type of optic nerve? - ANS Anterior brain Optic canal Sensory What is the origin, exit and type of oculomotor nerve? - ANS Anterior brain Superior orbital fissure Motor What is the origin, exit and type of trochlear nerve? - ANS Anterior brain Superior orbital fissure Motor What is the origin, exit and type of trigeminal nerve? - ANS Pons V1 - superior orbital fissure V2 - foramen rotundum V3 - foramen ovale Mixed What exits out of the foramen spinosum? - ANS Middle meningeal artery
What is the pathway of the oculomotor nerve? - ANS Emerges from the superior orbital fissure Passes between the superior cerebellar and posterior cerebral arteries Pierces dura matter Runs along the cavernosus sinus What muscles does the oculomotor nerve NOT innervate? - ANS Superior oblique and lateral rectus What are the functions of the trochlear nerve? - ANS Ocular movement Innervates superior oblique (turns eye downwards and laterally) What are the functions of the trigeminal nerve? - ANS Face sensation - cutaneous innervation Swallowing and mastication Voice and speech What are the 3 branches of the trigeminal nerve? - ANS Opthalmic Maxillary Mandibular What are the functions of the abducens nerve? - ANS Occular movement Innervates lateral eye muscles (abducts eye) What are the functions of the facial nerve? - ANS Facial movement Taste to anterior 2/3rds of tongue Voice and speech What are the 5 branches of the facial nerve? - ANS Temporal Zygomatic Buccal Mandibular Cervical What are the functions of the vestibocochlear nerve? - ANS Hearing and balance What are the functions of the glossopharyngeal nerve? - ANS Swallowing Elevation of the palate Gag reflex Taste to posterior 2/3rd of the tongue What are the functions of the vagus nerve? - ANS Swallowing Elevation of the palate Gag reflex Sensing blood pressure Parasympathetic control of lungs, heart and viscera
What are the functions of the accessory nerve? - ANS Shrugging shoulders and turning head by the trapezius and sternocleidomastoid muscles What are the functions of the hypoglossal nerve? - ANS Voice and speech Movement of the tongue Which cranial nerve is the largest? - ANS Trigeminal nerve Which cranial nerves are involved in the pupil reflex? - ANS Optic and oculomotor Which cranial nerves are involved in eye movement? - ANS Oculomotor, trochlear, abducens What cranial nerves are involved in swallowing and mastication? - ANS Trigeminal, glossopharyngeal, vagus What cranial nerve supplies taste to the anterior 2/3rd of the tongue? - ANS Facial - lingual branch What cranial nerves supply taste to the posterior 1/3rd of the tongue? - ANS Glossopharyngeal and vagus What cranial nerve exits from the posterior side of the brainstem? - ANS Trochlear Which cranial nerve is the longest? - ANS Vagusv Which cranial nerves carry sensory information about blood pressure to the brain? - ANS Vagus - aortic pressure Glossopharyngeal - carotid pressure Which cranial nerve is responsible for moving the eyes upwards? - ANS Oculomotor What cranial nerve is responsible for moving eyes downwards? - ANS Trochlea What cranial nerve moves eyes laterally? - ANS Abducens What cranial nerve is responsible for face pain? - ANS Trigeminal What cranial nerve is responsible for secretion of tears and saliva? - ANS Facial
