Flashcards in Paranasal sinus, orbit, nasal cavity, ear 11/15/16 TEST#4 Deck (41):
What are the three external nasal muscles?
-Levator Labi superioris alaeque nasi
The superior middle and inferior nasal meatus lay above their respective conchae
What are the major sources of blood for the lateral nasal cavity?
-ECA-maxillary-sphenopalatine-lateral posterior nasal artery
What are the major sources of blood for the nasal septum?
-ECA-maxillary sphenopalatine-posterior septal branches
-ECA-Facial-Septal branch of superior labial
What innervates the anterior nasal cavity and septum?
-V1 anterior ethmoidal nerve
What innervates everything but the anterior nasal cavity and septum in the nasal cavity and septum?
-V2 Sphenopalatine branch
What is a unique innervation of the nasal cavity and septum?
What are the four sinuses found in the head?
-Ethmoid air cells
Which three sinuses drain together?
What do the frontal, ethmoidal, and maxillary sinuses drain through to get into the nasal cavity?
What does the maxillary sinus drain through to join the frontal and ethmoidal sinuses?
If you have swelling behind the ear what could be a cause of that if it is linked to something in the mouth?
Where in the nose does the frontal, maxillary, and ethmoidal sinuses drain?
Where does the lacrimal duct drain into the nasal cavity at?
How many drainage sites do you have in the paranasal sinuses?
Of the 5 sites of drainage how many drain sinuses, orbit, and ear respectively?
What are four landmarks on the ear?
-External auditory meatus
What innervates the tragus on the ear?
What innervates the helix of the ear?
-Lesser occipital C2
What innervates on the actual ear?
What innervates the external auditory canal and the outer part of the tympanic membrane?
What innervates the inside part of the tympanic membrane?
If you clear your ears what muscles are you using?
-Tensor veli palatini
-Levator veli palatini
What transforms vibrations in the air to waves in fluid for sound?
What ossicle is found on the tympanic membrane?
What ossicle pushes on the oval window?
What innervates the cochlea and semicircular canals?
What are the three external ear muscles?
What two muscles help elevate the eyelid?
-Levator palpebrae superioris muscle
-Superior tarsal muscle
What innervate the superior tarsal muscle?
-Sympathetics from T1
What are three major features of the eyeball?
What is the function of the cornea?
-Refract light coming in
What feature do you find in the choroid layer?
If light is traveling from a distance what happens with the ciliary muscles, suspensory ligaments, and lens?
-Ciliary muscles - relaxed
-Suspensory ligaments - Tight
-Lens - Flat
Light traveling from a distance needs less refraction to focus on retina
If light is traveling from a close range what happens with the ciliary muscles, suspensory ligaments, and lens?
-Ciliary muscles - Contracted
-Suspensory ligaments - Loose
-Lens - Ovale
What disease occurs if you lack sympathetic innervation to the head?
What are the symptoms of Horner's syndrome?
What feature do you find on the back of the retina?
You should have bilateral contraction of sphincter pupillae muscles in the pupillary reflex