Opthalmic And Maxillary Divison

Question 1

The ophthalmic division enters the orbit via what?

Answer 1

Superior orbital fissure (just like 3, 4, and 6)

Question 2

Is the ophthalmic division sensory, motor, or both?

Answer 2

Sensory function only

Question 3

Where does the ophthalmic division carry sensory information from?

Answer 3

Carries sensation from the skin over the nose, forehead, and scalp
Carries sensation from mucous membrane in frontal and sphenoidal tissues and membrane covering nasal septum

Question 4

How many branches does the ophthalmic division give off?

Answer 4

Gives off four branches

Question 5

What are the names of the four branches of the ophthalmic division

Answer 5

Meningeal nerve
Lacrimal nerve
Frontal nerve
Nasociliary nerve

Question 6

Where is the meningeal branch or the tentorial branch given off and what does it supply?

Answer 6

Gives off before the ophthalmic division leaves the superior orbital fissure
Supplies dura mater lining the middle cranial fossa

Question 7

What is the lacrimal nerve known for?

Answer 7

Being the smallest of the three main nerve branches of the ophthalmic divison

Question 8

How does the lacrimal nerve travel and what does it supply

Answer 8

Travels along the superior aspect of the lateral rectus muscle. Passes through the lacrimal gland, which it supplies, and reaches the skin of the upper eyelid

Question 9

The lacrimal nerve also has parasympathetic innervations as well, describe the pathway and what it does

Answer 9

Carries parasympathetic fibers to the lacrimal gland.
Fibers originate in the pterygopalatine ganglion (CN 7) and reach the lacrimal gland by way of the zygomatic nerve (maxillary division branch)

Question 10

What is the frontal nerve well known for in the ophthalmic division

Answer 10

Being the largest major branch

Question 11

Does the frontal nerve give off branches?

Answer 11

Yes, two branches

Question 12

What are the two branches of the frontal nerve, ophthalmic division trigeminal

Answer 12

Supratrochlear nerve

Supraorbital nerve

Question 13

What does the supratrochlear nerve supply?

Answer 13

Conveys sensation form the medial corner of the eye

Question 14

What does the supraorbital nerve supply

Answer 14

Carries sensation from the conjunctiva, upper eyelid, and forehead as well as the mucous membrane lining the frontal sinus

Question 15

Does the nasociliary nerve give off branches?

Answer 15

Yes, three of them before dividing into two terminal branches, the anterior ethmoid and infratrochlear nerves

Question 16

What are the three branches of the nasociliary nerve before the terminal two nerves?

Answer 16

Communicating branch
Long ciliary nerve
Posterior ethmoid

Question 17

What does the communicating branch supply?

Answer 17

Goes to the ciliary ganglion

Question 18

What does the long ciliary nerve supply

Answer 18

Supplies the eyeball

Question 19

What does the posterior ethmoid nerve supply?

Answer 19

Carries sensory information from the sphenoidal and ethmoidal sinuses

Question 20

What does the anterior ethmoid nerve supply and how does it do it?

Answer 20

Supplies the skin over the nose by way of the external nasal nerve
Supplies the mucous membrane covering the anterior part of the nasal septum by way of the internal nasal nerve

Question 21

What does the infratrochlear nerve supply?

Answer 21

Supplies the medial corner of the eye, including the lacrimal sac

Question 22

The maxillary divison enters the ______ through the ________

Answer 22

Pterygopalatine fossa

Foramen rotundum

Question 23

Does the maxillary divison have sensory, motor, or both?

Answer 23

Sensory function only

Question 24

What does the maxillary division carry for sensory functions?

Answer 24

Sensation from the skin between the eyes and mouth, over the cheeks and temples
Carries information from the mucosa lining the maxillary sinuses, nasal conchae, palate, and gingiva

Question 25

How many branches of the maxillary division

Answer 25

Four branches

Question 26

What are the four branches of the maxillary division

Answer 26

Middle meningeal nerve Zygomatic nerve Two or three ganglionic branches Infraorbital nerve

Question 27

Where does the middle meningeal nerve travel and what does it supply

Answer 27

Given off before the division exits the foramen rotundum | Supplies the meninges of the middle cranial fossa

Question 28

Where does the zygomatic nerve enter?

Answer 28

Enters the orbit through the inferior orbital fissure

Question 29

What three nerves does the zygomatic nerve give off?

Answer 29

Communicating branch Zygomaticotemporal nerve Zygomaticofacial

Question 30

What does the communicating branch do?

Answer 30

Carries postganglionic parasympathetic fibers from the pterygopalatine ganglion to the lacrimal gland

Question 31

What does the zygomaticotemporal nerve do?

Answer 31

Supplies the skin over the temple

Question 32

What does the zygomaticofacial nerve do

Answer 32

Supplies skin over the cheek

Question 33

What do the two to three ganglion branches do?

Answer 33

Carry sensory information from the upper pharynx, nasal cavity, and palate through the pterygopalatine ganglion to the maxillary division

Question 34

Where does the infraorbital nerve travel and what does it do?

Answer 34

Travels through the infraorbital fissure and infraorbital canal to supply the lower eyelid, skin over the upper jaw and the maxillary sinus Before entering the infraorbital fissure, gives off three branches that carry sensory info from the teeth Posterior, middle, anterior superior alveolar nerves

Question 35

What is the plexus above the alveoli? What divison does it come from

Answer 35

The superior dental plexus and is from the infraorbital nerve

Question 36

What is the pterygopalatine ganglion used for in the maxillary division

Answer 36

Used to distribute postganglionic parasympathetic fibers from the pterygopalatine ganglion

Question 37

How does preganglionic parasympathetic fibers reach the ganglion?

Answer 37

Reaches the ganglion from the facial nerve by way of the greater petrosal nerve

Question 38

How does postganglionic sympathetic fibers reach the ganglion

Answer 38

They come from the superior cervical ganglion and pass through the pterygopalatine ganglion

Question 39

What else travels through the ptergopalatine ganglion

Answer 39

Sensory fibers also pass through the ganglion