Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

OPT 532 > Sensory Innvervation > Flashcards

Sensory Innvervation Flashcards

1
Q

Which nerves enter/exit the orbit through the superior orbital fissure above the oculomotor foramen?

A

The lacrimal nerve, the frontal nerve, and the trochlear nerve.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which nerves enter/exit the orbit through the superior orbital fissure within the oculomotor foramen?

A

The oculomotor nerve (both superior and inferior divisions), and the nasociliary nerve.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Superior to inferior, what is the order of the nerves that pass through the lateral wall of the cavernous sinus?

A

OculomotorTrochlearOphthalmicMaxillary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is Hutchinson’s sign?

A

A skin lesion at the tip of the nose (area served by anterior ethmoid nerve) that precedes the development of ophthalmic herpes zoster, an acute CNS infection.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What nerve(s) carry sensory information about the lateral orbit?

A

Lacrimal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What nerve(s) carry sensory information about the medial orbit?

A

Infratrochlear nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What nerve(s) carry sensory information about the superior orbit?

A

Frontal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What nerve(s) carry sensory information about the inferior orbit?

A

Infraorbital nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What nerve(s) carry sensory information about the globe?

A

Ciliary nerves.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the three divisions of the trigeminal nerve (CN V)?

A

Ophthalmic, Maxillary, and Mandibular.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What three nerves form the ophthalmic nerve?

A

Nasociliary, lacrimal, and frontal.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the purpose of the nasociliary nerve?

A

In part, it carries most if not all of the sensory information from the globe.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What nerves form the nasociliary nerve?

A

Infratrochlear nerve, anterior ethmoid nerve, posterior ethmoid nerve, the two long ciliary nerves, and the short ciliary nerves.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The infratrochlear nerve contains sensory fibers from what location(s)?

A

The medial canthal area: caruncle, canaliculi, lacrimal sac, medial aspect of the eyelids, and skin at the side of the nose.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The anterior ethmoid nerve contains sensory fibers from what location(s)?

A

The skin along the center of the nose, the nasal mucosa, and the ethmoid sinuses.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The posterior ethmoid nerve contains sensory fibers from what location(s)?

A

Ethmoid and sphenoid sinuses.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

In addition to their sensory fibers, the long ciliary nerves transmit sympathetic fibers to what location(s)?

A

Dilator muscle of the iris.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What pathway do the short ciliary nerves follow as they exit the sclera?

A

They pass through (but do not synapse on) the ciliary ganglion, exiting as the sensory root of the ciliary ganglion before joining with the nasociliary nerve.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

True or false: The ciliary ganglion contains only parasympathetic fibers.

A

False. It also contains sympathetic fibers.

20
Q

True or false: The nasociliary nerve lies within the muscle cone.

A

True.

21
Q

At what point does the nasociliary nerve exit the orbit?

A

It passes through the common tendinous ring and exits through the superior orbital fissure.

22
Q

The lacrimal nerve contains sensory fibers from what location(s)?

A

Lateral aspect of upper eyelid and temple area, as well as lacrimal gland.

23
Q

True or false: The lacrimal nerve lies within the muscle cone.

A

False. The lacrimal nerve lies above the muscle cone.

24
Q

True or false: The lacrimal nerve contains (in addition to its sensory fibers) both parasympathetic and sympathetic fibers.

A

True.

25
Q

At what point does the lacrimal nerve exit the orbit?

A

Through the superior orbital fissure.

26
Q

What nerves form the frontal nerve?

A

The supratrochlear nerve and the supraorbital nerves.

27
Q

The supratrochlear nerve contains sensory fibers from what location(s)?

A

Skin and muscles of the forehead and upper eyelid, but medial to the supraorbital nerve.

28
Q

The supraorbital nerve contains sensory fibers from what location(s)?

A

Skin and muscles of the forehead and upper eyelid, but lateral to the supratrochlear nerve.

29
Q

True or false: The frontal nerve lies above the muscle cone.

A

True. It also lies above the levator muscle.

30
Q

What nerves form the maxillary nerve?

A

The infraorbital nerve and the zygomatic nerve.

31
Q

What nerves form the zygomatic nerve?

A

The zygomaticotemporal nerve and the zygomaticofacial nerve.

32
Q

The infraorbital nerve contains sensory fibers from what location(s)?

A

The cheek, upper lip, and lower eye lid.

33
Q

How does the infraorbital nerve enter the orbit?

A

Through the infraorbital foramen, coming out in the infraorbital groove.

34
Q

How does the infraorbital nerve exit the orbit?

A

Through the inferior orbital fissure.

35
Q

Explain the concept of referred pain as it relates to the infraorbital nerve.

A

The infraorbital nerve, as it runs posteriorly, joins with sensory fibers from the upper teeth and maxillary sinus. The brain may misinterpret the location of intense tooth pain as coming from ocular structures.

36
Q

The zygomaticotemporal nerve contains sensory fibers from what location(s)?

A

Lateral aspect of the forehead.

37
Q

The zygomaticofacial nerve contains sensory fibers from what location(s)?

A

Lateral aspect of the cheek and lower eyelid.

38
Q

True or false: the zygomaticotemporal and zygomaticofacial nerves join to become the zygomatic nerve AFTER exiting the orbit through the inferior orbital fissure.

A

False. They join before running along the lateral orbital wall and exiting through the inferior orbital fissure.

39
Q

The maxillary nerve passes between which two bones?

A

The maxilla and the sphenoid.

40
Q

Through what opening does the maxillary nerve enter the skull?

A

Through the foramen rotundum.

41
Q

The trigeminal ganglion is also known as what?

A

The gasserian ganglion or the semilunar ganglion.

42
Q

Where is the trigeminal ganglion located?

A

In a fossa on the petrous portion of the temporal bone, lateral to the internal carotid artery.

43
Q

True or false: The fibers that leave the trigeminal ganglion enter the medial aspect of the pons.

A

False. They enter the lateral aspect of the pons.

44
Q

After entering the brainstem, where do fibers from the sensory root of CN V go?

A

Some fibers ascend, terminating in the principal sensory nucleus (touch and pressure sensation). Other fibers descend, terminating in the nucleus of the spinal tract (pain and temperature sensation).

45
Q

The mesencephalic nucleus of the CN V is involved with what sort of sensory information?

A

Proprioception.

46
Q

Describe the oculocardiac reflex.

A

Putting pressure on ocular structures can accidentally activate vagus synapses, since fivers from CN V project into the retincular formation near the vagus nerve nucleus. This can induce bradycardia, nausea, and faintness.

OPT 532 (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions