Brainscape's Knowledge GenomeTM

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


See full index

Neurology- Cranial Nerves > Trigeminal > Flashcards

Trigeminal Flashcards

1
Q

What base of skull foramina does CNV1 pass through?

A

Superior orbital fissure

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

What base of skull foramina does CNV2 pass through?

A

Foramen rotundum

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

What base of skull foramina does CNV3 pass through?

A

Foramen ovale

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

What type of information is carried on CNV1?

A

Sensory

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

What type of information is carried on CNV2?

A

Sensory

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

What type of information is carried on CNV3?

A

Sensory and motor

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

What are the sensory functions of CNV?

A

Somatosensation of the face, mouth, anterior 2/3rds of tongue, sinuses and supratentorial meninges / proprioception associated with chewing

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

CNV supplies the motor control to which muscles?

A

Muscles of mastication, tensor tympani, tensor veli palatini, mylohyoid, anterior belly of digastric

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

Where does the trigeminal nerve connect to the CNS?

A

At the pons (laterally, midway between midbrain and medulla)

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

Once the trigeminal nerve has connected with the CNS at the pons, describe its intracranial path?

A

Travels inferior to the edge of the tentorium cerebelli between the posterior and middle cranial fossa

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

Describe the extracranial path of the sensory axons of CNV?

A

Course from the superficial and deep structures of the face to their respective cranial formina

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

Describe the extracranial path of the motor axons of CNV?

A

Course from the foramen ovale towards the skeletal muscle they supply

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

What are the specific regions of the face supplies by CNV1, V2 and V3?

A

V1 = ophthalmic, V2 = maxillary, V3 = mandibular

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

What are some areas of the face which are supplied by CNV1?

A

Upper eyelid, cornea, conjunctiva, skin of the root/bridge/tip of the nose

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

Which specific part of CNV is responsible for the afferent limb of the corneal reflex?

A

CNV1

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

What are some areas of the face which are supplied by CNV2?

A

Lower eyelid, maxilla, ala of the nose, upper lip

17
Q

What are some areas of the face which are supplied by CNV3?

A

Skin over the mandible and TMJ

18
Q

What is the sensory supply to the angle of the mandible?

A

C2, 3 - great auricular nerve

19
Q

Where are trigeminal sensory cell bodies located? Where do their projections terminate?

A

In the trigeminal ganglion / the trigeminal nucleus

20
Q

Where is the trigeminal sensory ganglion found?

A

In the middle cranial fossa

21
Q

Describe the sensory nucleus of the trigeminal nerve?

A

Forms a long column of neurones which stretch from the midbrain down to the upper two segments of the cervical spinal cord

22
Q

Describe the function of the mesencephalic nucleus (part of the sensory nucleus of the trigeminal nerve)?

A

Proprioception information from the muscles of mastication

23
Q

Describe the function of the pontine trigeminal nucleus (part of the sensory nucleus of the trigeminal nerve)?

A

Touch and vibration

24
Q

Describe the function of the spinal nucleus (part of the sensory nucleus of the trigeminal nerve)?

A

Pain and temperature

25
Q

What is unusual about the mesencephalic nucleus (part of the sensory nucleus of the trigeminal nerve)?

A

It is the only sensory nucleus within the CNS

26
Q

What is the function of the ventral trigeminothalamic tract?

A

Passes the sensory fibres of CNV through the thalamus and into the cortex

27
Q

The motor neurones of CNV originate where?

A

In the trigeminal motor nucleus

28
Q

Describe the innervation of the LMNs of CNV?

A

They receive bilateral innervation from the UMNs

29
Q

What are the three pairs of jaw closing muscles supplied by CNV3?

A

Masseter, temporalis and medial pterygoid

30
Q

What is the one pair of jaw closing muscles supplied by CNV3?

A

Lateral pterygoid

31
Q

What does the mylohyoid muscle do?

A

Opens the mouth for swallowing and speech

32
Q

What does the anterior belly of digastric muscle do?

A

Also helps to open the mouth

33
Q

What does the tensor veli palatini muscle do?

A

Tenses the palate during swallowing

34
Q

What does the tensor tympani muscle do?

A

Tenses the tympanic membrane of the ear to reduce vibrations

35
Q

How is the sensory function of CNV tested?

A

By asking the patient to close their eyes and touch their skin in each region - ask the patient to tell you when they can feel something and compare the two sides

36
Q

How can the motor function of CNV be tested?

A

Palpate the strength of contraction of the masseter and temporalis muscles by asking the patient to clench their teeth / ask the patient to open their jaw against resistance

Neurology- Cranial Nerves (7 decks)

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