ENT Path and Phys

Question 1

Nerve supply to the ear

Answer 1

External ear: Auriculo-temporal branch of the trigeminal nerve (V), greater auricular nerve, lesser occipital nerve, & auricular branch of the vagus nerve (X)
Middle ear: Chorda tympani nerve, Tympanic plexus nerve
Inner ear: Facial nerve (VII), Vestibulocochlear nerve (VIII)

Question 2

Vestibular system 3 components

Answer 2

3 semi-circular canals
Utricle
Saccule

Question 3

Walls of nasal cavity:

Answer 3

Roof: Frontonasal, Ethmoidal, Sphenoidal
Floor: consists of palatine process of maxilla and horizontal plate of palatine bone
Medial: nasal septum, ethmoid bone, vomer, nasal crest of maxillary and palatine boned
Lateral: hallmarked by 3 nasal conchae, which divide nasal cavity into 4 passages that have openings to paranasal sinuses

Question 4

oropharynx

Answer 4

includes soft palate, back of tongue and tonsils

Question 5

Anterior cervical triangle

Answer 5

Bounded by the midline anteriorly
Mandible superiorly
Sternocleidomastoid muscle inferolaterally