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PNS > Opthalmic And Maxillary Divison > Flashcards

Opthalmic And Maxillary Divison Flashcards

1
Q

The ophthalmic division enters the orbit via what?

A

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

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2
Q

Is the ophthalmic division sensory, motor, or both?

A

Sensory function only

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3
Q

Where does the ophthalmic division carry sensory information from?

A

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

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4
Q

How many branches does the ophthalmic division give off?

A

Gives off four branches

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5
Q

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

A

Meningeal nerve
Lacrimal nerve
Frontal nerve
Nasociliary nerve

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6
Q

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

A

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

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7
Q

What is the lacrimal nerve known for?

A

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

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8
Q

How does the lacrimal nerve travel and what does it supply

A

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

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9
Q

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

A

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)

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10
Q

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

A

Being the largest major branch

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11
Q

Does the frontal nerve give off branches?

A

Yes, two branches

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12
Q

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

A

Supratrochlear nerve

Supraorbital nerve

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13
Q

What does the supratrochlear nerve supply?

A

Conveys sensation form the medial corner of the eye

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14
Q

What does the supraorbital nerve supply

A

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

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15
Q

Does the nasociliary nerve give off branches?

A

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

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16
Q

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

A

Communicating branch
Long ciliary nerve
Posterior ethmoid

17
Q

What does the communicating branch supply?

A

Goes to the ciliary ganglion

18
Q

What does the long ciliary nerve supply

A

Supplies the eyeball

19
Q

What does the posterior ethmoid nerve supply?

A

Carries sensory information from the sphenoidal and ethmoidal sinuses

20
Q

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

A

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

21
Q

What does the infratrochlear nerve supply?

A

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

22
Q

The maxillary divison enters the ______ through the ________

A

Pterygopalatine fossa

Foramen rotundum

23
Q

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

A

Sensory function only

24
Q

What does the maxillary division carry for sensory functions?

A

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

25
Q

How many branches of the maxillary division

A

Four branches

26
Q

What are the four branches of the maxillary division

A

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

27
Q

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

A

Given off before the division exits the foramen rotundum

Supplies the meninges of the middle cranial fossa

28
Q

Where does the zygomatic nerve enter?

A

Enters the orbit through the inferior orbital fissure

29
Q

What three nerves does the zygomatic nerve give off?

A

Communicating branch
Zygomaticotemporal nerve
Zygomaticofacial

30
Q

What does the communicating branch do?

A

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

31
Q

What does the zygomaticotemporal nerve do?

A

Supplies the skin over the temple

32
Q

What does the zygomaticofacial nerve do

A

Supplies skin over the cheek

33
Q

What do the two to three ganglion branches do?

A

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

34
Q

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

A

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

35
Q

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

A

The superior dental plexus and is from the infraorbital nerve

36
Q

What is the pterygopalatine ganglion used for in the maxillary division

A

Used to distribute postganglionic parasympathetic fibers from the pterygopalatine ganglion

37
Q

How does preganglionic parasympathetic fibers reach the ganglion?

A

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

38
Q

How does postganglionic sympathetic fibers reach the ganglion

A

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

39
Q

What else travels through the ptergopalatine ganglion

A

Sensory fibers also pass through the ganglion

PNS (3 decks)

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