Principles 2 final: ENT Flashcards
Ophthalmic and maxillary nerve are branches of _____ and are ____ nerves of _____
cranial V (trigeminal)
sensory nerve of upper respiratory tract
Blood supply of mouth and pharyngeal region (includes nose)
external carotid artery
Venous drainage of mouth
facial vein and external jugular vein
what is ligated for persistent nosebleed
maxillary artery
Glossopharyngeal nerve (IX) provides
sensory innervation to posterior 1/3 of tounge
responsible for taste sensation
Facial nerve (CN VII) provides
sensory innervation to anterior 2/3 of tongue
responsbiel for taste
Nerves respsonible for taste
glosspharyngeal (IX)
Facial (VII)
larynx is at
C3-6
largest cartilage of larynx
thyroid cartilage (adam’s apple)
site for emergency laryngotomy and transtracheal block
cricothyroid membrane
narrows part of laryngeal cavity
area between vocal cords
Larynx blood supply
- superior thyroid artery (branch of external carotid)
- inferior thyroid artery
Larynx nerve innervation
vagus branches into SLN and RLC
injury to SLN causes
inability to adduct (Close)
injury to RLN causes
inability to open (abduct)
bilateral injury is an emergency
Stimulation of SLN may cause
laryngospasm
damage to RLN may cause
hoarseness or dyspnea
Trigeminal nerve does (2):
- provide sensory and motor innervation to nose sinuses, palate and toung.
- motor control of face and mastication
Facial nerve innervation
motor and sensory for facial expressions
taste to anterior 2/3 of tounge
Glossopharyngeal (IX) innervates
motor and sensory from base of tounge and nasopharynx and oropharynx
responsible for gag reflex during instrumentation
Preop guidelines for cleft lip repair
Rule of 10:
1. weight at least 10 pounds
2. Hgb at least 10
3. WBC less than 10,000
No nasal intubation for lefort
II and III
criboform plate may be disrupted
