Paranasal sinus, orbit, nasal cavity, ear 11/15/16 TEST#4

Question 1

What are the three external nasal muscles?

Answer 1

• Procerus
• Nasalis
• Levator Labi superioris alaeque nasi

Question 2

T/F

The superior middle and inferior nasal meatus lay above their respective conchae

Answer 2

False

Below

Question 3

What are the major sources of blood for the lateral nasal cavity?

Answer 3

• ICA-opthalmic-Ethmoidal

- ECA-maxillary-sphenopalatine-lateral posterior nasal artery

Question 4

What are the major sources of blood for the nasal septum?

Answer 4

• ICA-opthalmic-Ethomoidal-Anterior septal
• ECA-maxillary sphenopalatine-posterior septal branches
• ECA-Facial-Septal branch of superior labial

Question 5

What innervates the anterior nasal cavity and septum?

Answer 5

-V1 anterior ethmoidal nerve

Question 6

What innervates everything but the anterior nasal cavity and septum in the nasal cavity and septum?

Answer 6

-V2 Sphenopalatine branch

Question 7

What is a unique innervation of the nasal cavity and septum?

Answer 7

-CN I

Question 8

What are the four sinuses found in the head?

Answer 8

• Frontal
• Ethmoid air cells
• Maxillary
• Sphenoid

Question 9

Which three sinuses drain together?

Answer 9

• Frontal
• Ethmoid
• Maxillary

Question 10

What do the frontal, ethmoidal, and maxillary sinuses drain through to get into the nasal cavity?

Answer 10

-Semilunar hiatus

Question 11

What does the maxillary sinus drain through to join the frontal and ethmoidal sinuses?

Answer 11

-Maxillary hiatus

Question 12

If you have swelling behind the ear what could be a cause of that if it is linked to something in the mouth?

Answer 12

-eustatian tube

Question 13

Where in the nose does the frontal, maxillary, and ethmoidal sinuses drain?

Answer 13

-Middle meatus

Question 14

Where does the lacrimal duct drain into the nasal cavity at?

Answer 14

-Inferior meatus

Question 15

How many drainage sites do you have in the paranasal sinuses?

Answer 15

5

Question 16

Of the 5 sites of drainage how many drain sinuses, orbit, and ear respectively?

Answer 16

3
1
1

Question 17

What are four landmarks on the ear?

Answer 17

• Helix
• Lobule
• Tragus
• External auditory meatus

Question 18

What innervates the tragus on the ear?

Answer 18

-V3

Question 19

What innervates the helix of the ear?

Answer 19

-Lesser occipital C2

Question 20

What innervates on the actual ear?

Answer 20

• Vagus

- Facial

Question 21

What innervates the external auditory canal and the outer part of the tympanic membrane?

Answer 21

• CN V

- CN X

Question 22

What innervates the inside part of the tympanic membrane?

Answer 22

-CN IX

Question 23

If you clear your ears what muscles are you using?

Answer 23

• Tensor veli palatini

- Levator veli palatini

Question 24

What transforms vibrations in the air to waves in fluid for sound?

Answer 24

-Ossicles

Question 25

What ossicle is found on the tympanic membrane?

Answer 25

-Malleus

Question 26

What ossicle pushes on the oval window?

Answer 26

-Stapes

Question 27

What innervates the cochlea and semicircular canals?

Answer 27

-CN VIII

Question 28

What are the three external ear muscles?

Answer 28

- Auricularis Anterior - Auricularis Superior - Auricularis Posterior

Question 29

What two muscles help elevate the eyelid?

Answer 29

- Levator palpebrae superioris muscle | - Superior tarsal muscle

Question 30

What innervate the superior tarsal muscle?

Answer 30

-Sympathetics from T1

Question 31

What are three major features of the eyeball?

Answer 31

- Sclera/cornea - Choroid layer - Retina

Question 32

What is the function of the cornea?

Answer 32

-Refract light coming in

Question 33

What feature do you find in the choroid layer?

Answer 33

- Ciliary muscles - Iris - Lens - Suspensory ligaments

Question 34

If light is traveling from a distance what happens with the ciliary muscles, suspensory ligaments, and lens?

Answer 34

- Ciliary muscles - relaxed - Suspensory ligaments - Tight - Lens - Flat

Question 35

T/F | Light traveling from a distance needs less refraction to focus on retina

Answer 35

True

Question 36

If light is traveling from a close range what happens with the ciliary muscles, suspensory ligaments, and lens?

Answer 36

- Ciliary muscles - Contracted - Suspensory ligaments - Loose - Lens - Ovale

Question 37

What disease occurs if you lack sympathetic innervation to the head?

Answer 37

-Horner's syndrome

Question 38

What are the symptoms of Horner's syndrome?

Answer 38

- Ptosis - Anhydrosis - Miosis

Question 39

What feature do you find on the back of the retina?

Answer 39

-Fovea centralis

Question 40

T/F | You should have bilateral contraction of sphincter pupillae muscles in the pupillary reflex

Answer 40

true

Question 41

What are the superficial orbit muscles?

Answer 41

- Orbicularis oculi - Corrugator supercilii - Depressor supercilli