Neck and ear Flashcards
What’s the most common orbital fracture?
floor/blowout
What permits movement of pharynx, esophagus, larynx, and trachea when swallowing and also a major pathway for infection, closed by base of cranium and carotid sheath?
retropharyngeal space
T/F: infection in retropharyngeal abscess usually spreads past manubrium
false
What disease predisposes you to retropharyngeal abscess?
Pott’s
What nerve is originating from 4th cervical and forming on anterior scalene anterior to subclavian arteries but below the subclavian veins?
phrenic nerve
What separates the neck from the floor of the mouth?
mylohyoid line
What’s the horseshoe bone?
hyoid bone
What are the suprahyoid muscles?
mylohyoid, geniohyoid, stylohyoid, digastric that elevate and help w/ chewing/swallowing, connecting to hyoid and cranium
What are the infrahyoid muscles?
strap muscles inferior to hyoid and depresses hyoid and larynx when swallowing or speakingq
What are the layers of the neck?
endocrine (thyroid/parathyroid) –> respiratory (larynx/trachea) –> alimentary (pharynx/esophagous)
What is deep to the sternothyroid and sternohyoid muscles?
thyroid gland, surrounded by a fibrous capsule
What is the signet ring shaped cartilage that maintains airway patency and provides an attachment for muscles?
cricoid cartilage
What’s the cartilaginous structure attached to inside of thyroid cartilage just below notch and attaches to hyoid bone?
epiglottis
What is Waldeyer’s ring?
adenoids + tubal tonsils + palatine tonsils (normal tonsils) + lingual tonsils (tongue)
area of lymphoid tissue that guard entrance to respiratory passage
Where is a common location of pharyngeal cancer?
laryngopharynx, pyriform sinus=laryngopharyngeal cancer
What are the four layers of the pharynx?
mucous membrane –> pharyngobasiliar fasica –> constrictor muscles (6) -> buccopharyngeal fascia
Where is the most common site of nasopharyngea lcarcinoma?
fossa of Rosenmuller, posterolateral pharyngeal recess
What’s the pars flaccida?
thin part of membrane TM
What is the opening that connects the epitympanic recess to the mastoid antrum?
aditus
What sends vibrations to the inner ear?
fenestra vesibuli (oval window)
What’s the major branch of the facial nerve that originates in facial canal of the temporal bone?
chorda tympani, which fuses with the lingual nerve
How is an infant’s ET different?
shorter length, flatter, no angulation, flaccid, and at risk for infection
