Head & Neck Anatomy: Cranial Nerves Flashcards
How many pairs of cranial nerves are there
12
What afferent nerve carries odor from the nose to the brain
Olfactory (I)
What afferent nerve carries visual information from the eye to the brain
Optic (II)
What efferent nerve contracts muscles of the eyes
Oculomotor (III)
What efferent nerve contracts the superior oblique muscle of the eye
Trochlear (IV)
What is an afferent and efferent nerve that is the largest of the cranial nerves
Trigeminal (V)
What nerve is afferent and innervated the forehead, eyelid, nose, lacrimal gland etc
Ophthalmic (V1)
Maxillary nerve (v2) is an afferent nerve; it leaves the skull through what foramen
Foramen rotundum
Infraorbital maxillary nerve (V2) passes through the infraorbital foramen; it innervated the upper lip, portion of the cheek, lower eyelid, side of nose etc. An infraorbital nerve block will numb
Maxillary anteriors and premolars
Anterior superior alveolar nerve innervates what
The maxillary anterior (including canines), periodontium and buccal gingiva
The middle superior alveolar nerve innervates the
Maxillary premolars and mesiobuccal root of the first molar, periodontium and buccal gingiva
*note some people don’t have this nerve
Posterior superior alveolar nerve innervates the
,auxiliary molars (exception of the mesiobuccal root of the 1st molar), periodontium and buccal tissues
The greater palatine nerve innervates
Posterior hard palate, palatal root, and related tissue
*passes through the greater palatine foramen
Lesser palatine nerve innervates
Soft palate and tonsils
Nasopalatine nerve innervates the
Anterior palate and lingual tissue of that region
Mandibular (V3) is afferent and efferent. It innervates the
Muscles of mastication
(Masseter, temporalis, medial pterygoid and lateral pterygoid)
What is the largest of the trigeminal branches
Mandibular (V3)
Buccal nerve innervates the
Buccal gingiva from the mental foramen to the posterior region
Inferior alveolar innervates all
Lower teeth
Incisive nerve is part of the inferior alveolar and innervates the
Lower incisors and canines
Mental nerve is part of the infraorbital alveolar nerve and innervates the
Buccal gingiva (lower lip, chin, anterior labial mucosa) anterior to the mental foramen (around the second premolar)
Lingual nerve innervates the
Floor of the mouth, lingual gingiva, and anterior of the tongue (sensory)
Facial nerve (VII) is afferent and efferent; facial motor deals with
Facial expression muscles, posterior belly of figastric muscle, stylohyoid muscle and stapedius muscle
Facial (VII) nerve special sensory referring to
Taste from anterior two thirds of the tongue
The vestibulocochlear (VIII) nerve is afferent and provides __ and __
Hearing and balance
The glossopharyngeal (IX) nerve is afferent and efferent; it is associated/related to the gag reflex. What does it innervate
Innervates the posterior third of the tongue (taste and sense), parotid gland and pharynx
