Intro to ENT Lecture Powerpoint

Question 1

The middle ear contains the ____ that functions to equalize pressure through a connection to the ___

Answer 1

Eustachian tube, nasopharynx

Question 2

Hearing pathway

Answer 2

External ear
Ear drum
Ossicles
Oval window
(Vestibulocochlear apparatus - vestibule and cochlea)
Cochlea (fluid filled)
Hair cells (ending at round window)
Cochlear nerve
Brainstem

Question 3

3 regions of the nasal cavity

Answer 3

Vestibular (external opening contains hair bearing skin)
Respiratory (contains mucus secreting goblet cells)
Olfactory (lined by olfactory cells and receptors)

Question 4

The only 2 sinus strucures that can be accurately palpated on physical exam are…

Answer 4

• frontal

- maxillary

Question 5

Epiglottic vallecula

Answer 5

Depression behind root of tongue at floor of oropharynx where saliva is held until initiation of the swallowing reflex, an important landmark in intubation, space between tongue and epiglottis

Question 6

Hypopharynx

Answer 6

Portion of pharynx that lies inferior to the tip of the epiglottis and extends to the esophagus

Question 7

Stensens duct

Answer 7

The duct emptying the parotid salivary gland, enters the buccal mucosa opposite the 2nd molar and sees facial nerve passing thru this gland

Question 8

Wharton’s duct

Answer 8

The duct of the submandibular glands located at the floor of the mouth, with a portion of lingual, facial, and hypoglossal nerves lying deep to this gland

Question 9

2 head and neck infections seen almost exclusively in patients with diabetes

Answer 9

Malignant otitis externa and rhinocerebral mucormycosis