29/4/21 Flashcards
(28 cards)
Where does the sphenoidal sinus drain into?
Sphenoethmoidal recess in superior meatus
What are the 4 paranasal sinuses?
Frontal, sphenoidal, maxillary and ethmoidal
What is the purpose of the paranasal sinuses?
Lower weight of skull, sound resonance, air humidification, adjust temp
What is the purpose of the superior middle and inferior meatus?
Increase surface area, humidify air and trap pathogens
Where does the ethmoidal sinus drain into
Middle meatus
Where does the frontal sinus drain into
Middle meatus
Where does the maxillary sinus drain into
Middle meatus
Describe the innervation of the anterior 2/3 of tongue
General sensation: mandibular branch of trigeminal nerve
Special sensation: chorda tympani (CN7 branch)
Describe the innervation of the posterior 1/3 of tongue
Special and general sensation: glossopharyngeal
How do you distinguish between the anterior 2/3 of tongue and posterior 1/3?
Circum vallate papillae
What 2 bumps are found on the anterior 2/3 of tongue?
Fungiform and filliform
Boundaries of the nasopharynx
Base of skull to hard palate
Boundaries of the oropharynx
Hard palate to hyoid bone
Boundaries of the laryngopharynx
Hyoid bone to C6
Where does the oesophagus start
C6
Surface marker for apex of heart
Subclavicular line 5th intercostal space
What is the triangular opening between true vocal chords called?
Rima glottidis
What is the triangular opening between false vocal chords called?
Rima vestibuli
What is the only elastic cartilage in the pharynx
Epiglottis
What are the unpaired cartilages of the larynx?
Epiglottis, thyroid, cricoid
What are the paired cartilages in the larynx
Cuneiform, corniculate, arytenoid
What’s the innervation of the cricothyroid muscle?
External branch of the superior laryngeal nerve( branch of vagus)
What is the innervation of all but 5 laryn muscles
Recurrent laryngeal nerve
What are the 2 main muscles in the middle ear and what are they supplied by?
Stapedius: chords tympani
Tensor tympani: v3
