Sensory Innervation of Airway Flashcards
What nerve innervates nasal mucosa to provide sense of smell?
Olfactory nerve (CN I)
What divisions of trigeminal nerve (CN V) innervate mucous membranes and nose
V1-V3
V1 is what division of trigeminal nerve, what is the nerve name, and what does it innervate?
Opthalmic divison, anterior ehtmodial nerve, anterior nose
V2 is what division of trigeminal nerve, what is the name of the nerve, and what does it innervate?
Maxillary division, sphenopalantine nerve, posterior nose
V3 is what division of trigeminal nerve, what is the name and what does it innervate?
Mandibular division, lingual nerve, anterior 2/3 of tongue
What division of trigeminal nerve (CN V) provides sensory to the superior & inferior surfaces of the hard and soft palate
Palantine nerve (division ov V2)
Sympathetic innervation from the superior cervical ganglion results in…
vasoconstriction and shrinkage of the nasal tissue
What nerve innervates the posterior 1/3 of of the tongue
Glossopharyngeal (CN IX)
Branches from what two nerves provide sense of taste?
Glossopharyngeal (CNIX) and Facial nerve (VII)
What does glossopharyngeal nerve (CN IX) innervate?
posterior 1/3 of tongue, the roof of the pharynx, tonsils, epiglottis, base of the tongue, and the under surface of the soft palate
What nerve carries the afferent sensory of gag reflex
Glossopharyngeal (CN IX)
What nerve carries the efferent motor action of the gag reflex
Vagus nerve (CN X)
Nerves blocked during nasal intubation
V1-V3
Nerves blocked during awake intubation
Glosspharyngeal (CN IX) and Vagus (CN X)
If we want to block gag reflex which nerve do we block
CN IX (Glossopharyngeal)
Provides sensation to airway below the epiglottis
Vagus nerve (CN X)
What does the SLN divide into?
External and internal branches
What branch branches earlier off of the SLN
Internal branch
Provides sensory input to the hypopharynx above the vocal cords
Internal branch of SLN
Provides motor nerve function to the cricothyroid muscle
External branch of SLN
Provides sensory innervation to the subglottic area and the trachea (below the cords)
RLN
What does the RLN divide into
Right and left RLN
Provides motor function to all the muscles of the larynx except the cricothyroid muscle (which is supplied by the external branch of SLN)
Motor branch of RLN
Right RLN loops around…
the subclavian and the innominate (brachiocephalic) artery
