Test 3 - Special Senses

Question 1

What are the 3 Superior facial mm you need to know?

Answer 1

Proceeds

Nasalis

Levator labii superioris alaeque nasi

Question 2

What cartilages are on the nose?

Answer 2

Lat cartilage

Septal cartilage

Alar cartilage

Question 3

3 conchae and 3 meatuses?

Answer 3

Sup, mid, inf for both.

Meatuses lay below respective conchae

Question 4

What are the major sources of blood for the LATERAL nasal cavity? (3)

Answer 4

ICA - Ophthalmic - ethmoidal aa. (Ant and post)

ECA - Maxillary - Sphenopalatine - Lat Post Nasal aa.

Question 5

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

Answer 5

ICA - ophthalmic - Ethmoidal aa - ant septal bb.

ECA - Maxillary - sphenopalatine - Post septal bb.
- Facial - septal branch of superior labial a.

Question 6

What plexus is in the anteroinferior portion of the nose?

Answer 6

Kiesselbach’s plexus

*Nose bleeds

Question 7

What is the innervation to the nasal cavity and septum?

Answer 7

V1 - Ant nasal septum and cavity
-> Ant ethmoidal nerve

V2 - Rest of the nasal septum and cavity
->Nasopalatine (sphenopalatine) via sphenopalatine foramen

*ALSO, CN I

Question 8

Tears take what route?

Answer 8

Lacrimal gland

Sup/Inf puncta

Sup/Inf lacrimal canaliculi

Lacrimal sac

Nasolacrimal duct

Drains below the concha

Question 9

What are the 4 sinuses?

Answer 9

Frontal

Ethmoid (Air cells)

Maxillary

Sphenoid

Question 10

What sinuses drain into the middle meatus?

Answer 10

Frontal
Ethmoid
Maxillary

Question 11

What does the ethmoid sinus drain into?

Answer 11

Sphenoethmoidal recess

Question 12

What drains tears?

Answer 12

Lacrimal duct

Question 13

What drains the ear?

Answer 13

Pharyngeal orfice of auditory tube

Question 14

4 parts of the external ear?

Answer 14

Helix

Lobule

Travis

Ext acoustic meatus

Question 15

What does sensory of the superoanterior ear?

Answer 15

Auriculotemporal

Question 16

What does sensory of posterior ear?

Answer 16

Lesser occipital

Question 17

What does sensory inferior to the ear?

Answer 17

Great auricular

Question 18

On the actual auricle, what is doing sensory? (2 CNs)

Answer 18

VII

X

Question 19

What does sensory to tympanic membrane?

Answer 19

Outer - X

Inner - IX

Question 20

What does sensory to middle ear?

Answer 20

CN IX

*With some CN VII

Question 21

What vasculates middle ear?

Answer 21

Branches of maxillary artery

• Ant Tympanic
• Deep auricular

Question 22

What are the ossicles?

Answer 22

Malleus
Incus
Stapes

• Stapes pushes on what?
• Oval window
• Malleus is on what?
• Tympanic membrane

Question 23

What is in the internal ear?

What nerve is major here?

Answer 23

Cochlea

Semicircular canals

CN VIII

Question 24

What are the three major external ear muscles?

What innervates them?

What artery supplies them?

Answer 24

Auricularis ant

Auricularis sup

Auricularis post

CN VII (Facial expression)

Sup temp, post auricular, etc.

Question 25

What muscles closes the eye?

Answer 25

Orbicularis oculi CN VII

Question 26

What two muscles act on the eyelid?

Answer 26

Levator palpebrae superioris m -CN III Sup tarsal m -Sympathetics from T1 spinal cord —Pregang - T1 —Postgang - Sup cerv gang

Question 27

3 major layers of the eyeball.

Answer 27

Sclera/cornea Choroid layer Retina

Question 28

What is sensory to the cornea?

Answer 28

V1 *Cornea is clear bulb in ant eye

Question 29

What is in the choroid layer?

Answer 29

Ciliary m —Lens Iris - Colored part

Question 30

What does the ciliary muscle do?

Answer 30

When the MUSCLE is relaxed, the suspensory ligaments are TIGHT and the lens is flat —This is for looking at the mountains When the MUSCLE contracts, the suspensory ligaments are LOOSE and the lens is fat —This is for reading a book

Question 31

Ciliary muscle, symp or parasymp?

Answer 31

PARASYMP

Question 32

The sphincter pupillae muscle does what? Parasymp or symp? What nerve?

Answer 32

Constricts the pupil Parasymp CN III

Question 33

Which reflex uses only sphincter pupillae?

Answer 33

Pupillary light reflex

Question 34

Which reflex uses both the sphincter pupillae and the ciliary muscle?

Answer 34

Accommodation (lens reshaping for looking at things of different distances)

Question 35

Both the ciliary muscle and sphincter pupillae muscle use what route to get to the eye?

Answer 35

Accessory oculomotor nucleus to ciliary ganglion to eye

Question 36

The dilator pupillae muscle does what? What response?

Answer 36

Dilates the pupil Sympathetic

Question 37

What other muscle of the eye is sympathetically innervated?

Answer 37

Superior tarsal muscle

Question 38

What is Horner’s syndrome?

Answer 38

Lack of sympathetic innervation to the head

Question 39

What are the symptoms of Horner’s syndrome?

Answer 39

Ptosis - droopy eyelid Anhydrosis - decreased sweating Miosis - constricted pupil **PAM (Ptosis, Anhydrosis, Miosis) has Horn’s

Question 40

What on the retina gives the point of highest acuity?

Answer 40

Fovea centralis

Question 41

T/F - The pupillary reflex is a consensual reflex.

Answer 41

TRUE *Utilizes the Edinger-Westphal nucleus (parasymp)

Question 42

What does LR6SO4R3 mean?

Answer 42

Lat rectus - CN 6 Sup oblique - CN 4 Rest - CN 3

Question 43

Know the anatomical actions.

Answer 43

Lat rectus (6) - Lateral Med rectus (3) - Medial Sup rectus (3) - Sup and medial Inf rectus (3) - Inf and medial Sup oblique (4) - INF and LAT Inf oblique (3) - SUP and LAT

Question 44

Ophthalmic a comes off what? And what are its branches?

Answer 44

ICA -Lacrimal -Frontal (Supratrochlear) —Ant ethmoid —Post ethmoid -Supraorbital

Question 45

DRAW THE BRACHIAL PLEXUS!

Answer 45

NOW!

Question 46

DRAW THE CERVICAL PLEXUS!

Answer 46

NOW!