Cranial Nerves
Cranial Nerves
Cranial nerve responsible for motor function of intrinsic and extrinsic tongue muscles (except palatoglossus) - Hypoglossal nerve (C N twelve)
Muscle forming the bulk of the cheek - Buccinator
Branch of mandibular nerve (V three) that supplies the mandibular teeth - Inferior alveolar nerve stick out
Muscle primarily responsible for protruding the mandible - Lateral pterygoid
Cranial nerve responsible for smell - Olfactory nerve (C N one)
Tissue that produces dentin - Odontoblasts
Parasympathetic glands supplied by C N seven (give one) - Submandibular gland
Nerve that carries general sensation from anterior two-thirds of tongue but not taste - Lingual nerve (V three)
Salivary gland that secretes mostly mucous - Sublingual gland
Hardest substance in the human body - Enamel
Nerve affected if patient cannot close eyes tightly - Facial nerve (C N seven)
Cranial nerve that moves the eye downward and inward (superior oblique) - Trochlear nerve (C N four)
Cranial nerve responsible for hearing and balance - Vestibulocochlear nerve (C N eight)
Cranial nerve that supplies taste in anterior two-thirds of tongue - Facial nerve (C N seven, via chorda tympani)
Nerve that supplies muscles of mastication - Mandibular nerve (V three)
Opening of nasolacrimal duct - Inferior meatus of nasal cavity
Nerve responsible for parasympathetic control of abdominal organs - Vagus nerve (C N ten)
Muscle that closes the eyelids - Orbicularis oculi (C N seven)
Stalk-like structure connecting cerebrum to spinal cord and cerebellum - Brainstem
Epithelial lining of the maxillary sinus - Respiratory epithelium
Nerve supplying the stylopharyngeus muscle - Glossopharyngeal nerve (C N nine)
Largest salivary gland - Parotid gland
Cranial nerve that originates from the pons - Trigeminal nerve (C N five)
Muscle that elevates the mandible - Masseter, Temporalis, Medial pterygoid
Structure separating the nasal cavity from the oral cavity - Hard palate, Soft palate
Cranial nerve responsible for raising the eyelid - Oculomotor nerve (C N three)
Eye closure affected if patient cannot close eyes tightly - Facial nerve (C N seven)
Nerve involved if mandibular teeth lose sensation - Inferior alveolar nerve (V three)
Type of epithelium lining the oral cavity - Stratified squamous epithelium (keratinized in some areas)
Nerve that carries general sensation and taste from posterior one-third of tongue - Glossopharyngeal nerve (C N nine) (bonus for extra prep)
Olfactory nerve (C N one)
Part or area: Olfactory epithelium of nasal cavity to olfactory bulb to smell sensation
Optic nerve (C N two)
Part or area: Retina of eye to optic chiasm to vision
Oculomotor nerve (C N three)
Part or area:
Extraocular muscles: superior rectus, inferior rectus, medial rectus, inferior oblique
Levator palpebrae superioris (opens eyelid)
Parasympathetic to pupil (sphincter pupillae and ciliary muscle)
Trochlear nerve (C N four)
Part or area: Superior oblique muscle (moves eye down and inward)
Trigeminal nerve (C N five) - three divisions
Ophthalmic (V one): forehead, scalp, cornea sensation
Maxillary (V two): midface, upper teeth, maxillary sinus
Mandibular (V three): lower teeth and muscles of mastication
Abducens nerve (C N six)
Part or area: Lateral rectus muscle (moves eye laterally)
Facial nerve (C N seven)
Part or area:
Muscles of facial expression
Taste anterior two-thirds of tongue
Lacrimal gland and salivary glands (submandibular, sublingual)
Vestibulocochlear nerve (C N eight)
Part or area:
Cochlea to hearing
Vestibular apparatus to balance
Glossopharyngeal nerve (C N nine)
Part or area:
Taste posterior one-third tongue
Parotid gland secretion
Pharynx sensation and swallowing (stylopharyngeus)
Vagus nerve (C N ten)
Part or area:
Soft palate, pharynx, larynx (speech and swallowing)
Parasympathetic to thoracic and abdominal organs Accessory nerve (C N eleven)
Part or area: Sternocleidomastoideopezius muscles (head turn and shoulder shrug) Hypoglossal nerve (C N twelve)
Part or area: Intrinsic and extrinsic tongue muscles (tongue movement)