ENT Anatomy Flashcards
Which foramen does the facial nerve pass through?
Internal Acoustic Meatus
How many cranial nerves pass through the jugular foramen?
3
Describe the role of the vestibulocochlear nerve
It is responsible for the special senses of hearing (via the cochlear nerve), and balance (via the vestibular nerve).
Which part of the tympanic membrane is the cone of light in?
anteroinferior
This can be used to work out which ear an otoscopy is of
Name the muscles of the middle ear and their nerve supply?
Tensor tympani-CN V3
Stapedius- CN VII
What type of joints do the ossicles articulate with?
Synovial joints
What type of movement do the semicircular canals detect?
Angular movement
What type of movement do the utricle and saccule detect
Linear movement
What is another name for the nostril and for the rounded eminence around it?
nares, ala
Boy presents with delayed puberty and lack of smell
Kallman’s syndrome
What arteries contribute to Kiesselbach’s area?
- posterior ethmoidal
- anterior ethmoidal
- sphenopalatine artery
- greater palatine artery
- superior labial artery
Which carotid artery do the anterior and posterior ethmoidal arteries branch off?
Internal carotid artery
Which sinus is most prone to infection and why?
The maxillary because its ostium is superior to its cavity so its harder to drain
What drains through the inferior meatus?
lacrimal fluid via the nasolacrimal duct
What drains through the superior meatus?
drainage of posterior ethmoidal air cells
What drains through the sphenoethmoidal recess?
drainage of sphenoid sinus
What bone are the superior and middle meatus part of?
Ethmoid
Where does the maxillary sinus drain?
Semilunar hiatus of the middle meatus
Where does the frontal sinus drain?
Middle meatus
Which bone is the middle ear in? Be specific
Petrous part of the temporal bone
Which nerve supplies parasympathetic secretomotor innervation to the submandibular and sublingual glands?
The chorda tympani branch of the facial nerve
What nerve supplies parasympathetic secretomotor innervation to the parotid gland?
CN IX (glossopharyngeal nerve)
Where does the parotid gland secrete fluid?
upper 2nd molar into the mouth
Which gland does the facial nerve pass through but not innervate?
Parotid
What is respiratory mucosa?
ciliated pseudostratified columnar epithelium
Which nerve supplies the muscles of the tongue (intrinsic and extrinsic), except 1?
CN XII (Hypoglossal nerve)
Which muscle of the tongue is supplied by a different nerve to the rest and what nerve supplies it?
The palatoglossus
supplies by the pharyngeal plexus mainly the motor branches of CN X (vagus nerve)
What divides the tongue into the anterior 2/3 and posterior 1/3
Foramen caecum
What is the blood supply to the tongue?
lingual branch of the ECA
Which muscle of the pharynx is not innervated by CNX (vagus) and what is it innervated by?
The stylopharyngeus and it is innervated by CN IX (glossopharyngeal)
Which vertebral levels is the larynx found between?
C4-C6 (hence the oesophagus starts at C6)
