Head and Neck Anatomy Flashcards
7 cards from real ADEX practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Head and Neck Anatomy flashcards as text
Which division of the trigeminal nerve passes through the foramen ovale?
Answer: Mandibular division (V3)
The mandibular division (V3) of the trigeminal nerve exits the cranium through the foramen ovale in the greater wing of the sphenoid bone.
The posterior superior alveolar (PSA) nerve typically innervates which maxillary teeth?
Answer: The second and third molars, plus the distobuccal and palatal roots of the first molar
The PSA nerve innervates the maxillary second and third molars plus the distobuccal and palatal roots of the first molar; the mesiobuccal root is typically innervated by the middle superior alveolar (MSA) nerve.
The buccinator muscle receives its motor innervation from which cranial nerve?
Answer: Facial nerve (CN VII)
The buccinator is a muscle of facial expression and receives motor innervation from the buccal branch of the facial nerve (CN VII), like all muscles of facial expression.
Which muscle forms the muscular floor of the oral cavity, creating a sling between the two sides of the mandible?
Answer: Mylohyoid
The mylohyoid muscle forms the primary muscular floor of the oral cavity, attaching along the mylohyoid line on the inner surface of the mandible and meeting at a median raphe.
The mental nerve, providing sensation to the chin and lower lip, exits the mandible through which structure?
Answer: Mental foramen
The mental nerve exits the mandible through the mental foramen, typically located below the apex of the mandibular second premolar, providing sensation to the chin and lower lip.
Which muscle is primarily responsible for protruding the tongue and is innervated by the hypoglossal nerve?
Answer: Genioglossus
The genioglossus is the primary tongue protruder, originating from the mental spine (genial tubercle) of the mandible and fanning out through the tongue.
The lingual nerve provides general sensory innervation to which area?
Answer: Anterior two-thirds of the tongue and floor of the mouth
The lingual nerve (a branch of V3) provides general sensation to the anterior two-thirds of the tongue and the floor of the mouth; the chorda tympani joins it to carry taste from the same region.