intubation_airway_A/P
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each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are two sensory innervations to nasopharynx ? | Anterior ethmoidal nerve (opthalmic division of trigeminal nerve V) anteriorly & Sphenopalatine nerve (maxillary division of CN V) posteriorly
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| Where is the location of epiglottis? | At level of C3 in children; At level of C5 in adults
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| What are the sensory innervations to orophargynx? | To hard and soft palate: palatine nerves from CN V and CN VII nerves To tongue (anterior 2/3): lingual nerve from CNV To tongue (posterior 1/3): glossophargyngeal nerve (CN IX) To tongue for taste sensation: CN VII and IX
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| What are the three unpaired cartilages in largynx? | Thyroid, cricoid and epiglottis
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| What are the three paired cartilages? | Arytenoid, corniculate and cuneiform
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| What is the largest cartilage in larynx? | Thyroid cartilage
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| What cartilage is shaped like signet ring? | Cricoid cartilage
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| Which nerve controls sensory innervation at Epiglottis (vallecula)? | CN IX
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| Which nerve control motor innervation at cricothyroid? | SLN (external)
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| Which nerve control sensory innervation between epiglottis and vocal cords? | SLN (internal)
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| Which nerve control sensory innervation between vocal cords and trachea? | RLN
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| Which nerve controls all muscles of larynx except cricothyroid? | RLN
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| Function of SLN (external)? | Control cricothyroid Actions: tension/elongate vocal cords
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| Functions of RLN? | Posterior cricoarytenoids (PCA): abductors of vocal cords Lateral cricoarytenoids (LCA): adductors of vocal cords Thyroarytenoids: Relaxers of vocal cords Oblique arytenoids: control sphincters of vestibule.
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| Damages to Vagus nerve, unilateral? | Hoarseness
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| Damages to Vagus nerve, bilateral? | Aphonia
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| Damages to RLN, unilateral? | Hoarseness
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| Damages to RLN, bilateral and acute? | Stridor, respiratory distress
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| Damages to RLN, bilateral and chronic? | Aphonia
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| Damages to SLN, unilateral? | Minimal effects
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