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CNM S2 Cranial Nerves 1-10 > L14 Cranial Nerves 1-10 > Flashcards

L14 Cranial Nerves 1-10 Flashcards

Unedited combination of copied cards - may be duplication

1
Q

Which cranial nerves are located in the medulla oblongata?

A

9-12

  1. Glossopharyngeal
  2. Vagus
  3. Accessory
  4. Hypoglossal
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2
Q

Which tract is located in the medulla oblongata?

A

Corticospinal tract (motor)

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3
Q

What does the pons help to control?

A

Breathing

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4
Q

Which cranial nerves are located in the pons?

A

5-8

  1. Trigeminal
  2. Abducens
  3. Facial
  4. Vestibulocochlear
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5
Q

Which tract does the pons relay?

A

Motor

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6
Q

What does the midbrain do?

A

Controls eye reflexes and tracking
Controls head and neck movements
Auditory tracts
Transfers motor tracts

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7
Q

Which cranial nerves are located in the midbrain?

A
  1. Oculomotor
  2. Trochlear
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8
Q

How many cranial nerves are there?

A

12 pairs

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9
Q

What are the cranial nerves?

A
  1. Olfactory
  2. Optic
  3. Oculomotor
  4. Trochlear
  5. Trigeminal
  6. Abducens
  7. Facial
  8. Vestibulocochlear
  9. Glossopharyngeal
  10. Vagus
  11. Accessory
  12. Hypoglossal
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10
Q

Which cranial nerves are located in the cerebrum?

A

1-2

I. Olfactory
2.Optic

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11
Q

Which cranial nerves are located in the midbrain?

A
  1. Oculomotor
  2. Trochlear
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12
Q

Which cranial nerves are located in the pons?

A
  1. Trigeminal
  2. Abducens
  3. Facial
  4. Vestibulocochlear
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13
Q

Which cranial nerves are located in the medulla oblongata?

A
  1. Glossopharyngeal
  2. Vagus
  3. Accessory
  4. Hypoglossal
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14
Q

Table

A

!

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15
Q

Cranial nerve I - name, function, location

A

I. Olfactory
Sense of smell
Cerebrum

Unmylinated

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16
Q

Cranial nerve 2 - name, function, location

A

2. Optic
Vision
Cerebrum

Only visible in retina

Densely mylinated, highspeed avoids double vision when turning head

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17
Q

Cranial nerve 3. - name, function, location

A

3. Oculomotor
Moves eyeballs,
Elevates eyelid,

(4 out of 6 eye muscles)

Midbrain

18
Q

Cranial nerve 4 - name, function, location

A

4. Trochlear
Eye movements
Midbrain

19
Q

Cranial nerve 5 - name, function, location

A

5 Trigeminal
Facial sensations, chewing, some taste
Pons

20
Q

Cranial nerve 6 - name, function, location

A

6 Abducens
Eye movement (abducts eye)
Pons

21
Q

Cranial nerve 7 - name, function, location

A

7 Facial
Taste, facial expressions, salivary glands
Pons

22
Q

Cranial nerve 8. - name, function, location

A

8. Vestibulocochlear
Hearing, balance
Pons

23
Q

Cranial nerve 9. - name, function, location

A

9. Glossopharyngeal
Taste, swallowing, tongue sensations
Medulla oblongata

24
Q

Cranial nerve 10. - name, function, location

A

10. Vagus
Sensory/motor functions in chest & abdomen (Heart, GI tract, Lungs)
Medulla oblongata

Largest nerve in ANS

25
Q

Cranial nerve 11. - name, function, location

A

11. Accessory (spinal)

Innervates Trapezius and sternocleidomastoid

Shoulder elevation & Neck rotation
Medulla oblongata

26
Q

Cranial nerve 12. - name, function, location

A

12. Hypoglossal
Tongue movement and speech
Medulla oblongata

27
Q

How many eye muscles does the oculomotor nerve (3.) move?

A

4 out of 6
Moves eyeball
Elevates eyelid

28
Q

How many eye muscles does the trochlear nerve (9) move?

A

1 of 6
Rotates eyes
Used in reading

29
Q

How many eye muscles does the abducens nerve (6.) move?

A

1 of 6
Abducts eye

30
Q

Damage to the oculomotor, trochlear or abducens nerves, leads to?

A

Strabismus (squint)

Ptosis (drooping of upper eyelid)

Diplopia (double vision)

31
Q

What is strabismus?

A

One eye crossed (squint)

32
Q

What is ptosis?

A

Drooping of upper eyelid

Damage to 3. oculomotor

33
Q

What is diplopia?

A

Double vision

34
Q

What are the branches of the trigeminal nerve (5.)?

A

Ophthalmic
Maxillary
Mandibular

35
Q

What is the vagus nerve?

A

Largest nerve of the autonomic nervous system

36
Q

What information does the vagus nerve carry?

A

All sensory information from chest and abdomen
(Heart, GIT, lungs)
Motor and sensory information from chest and abdomen

37
Q

What can damage to the vagus nerve cause?

A

Tachycardia
Dysphagia
Vaso-vagal syncope (fainting)

38
Q

Mnemonic for remembering the cranial nerve functions

A 
Some - Sensory
Say - Sensory
Money - Motor
Matters - Motor
But - Both
My - Motor
Brother - Both
Says - Sensory
Big - Both
Brains - Both
Matter - Motor
More - Motor
39
Q

Rule for cranial nerve locations

A

2,2,4,4
* 2 - Cerebrum
* 2 - Midbrain
* 4 - Pons
* 4 - Medulla oblongata

40
Q

Why is the optic nerve useful to assess intracranial lesions ?

A

The optic nerve spans through the majority of the cranium.
Any abnormal pressure in the brain would likely press on this nerve

41
Q

Is the vagus nerve sensory or motor ?

A

Both
90% afferent nerve fibres (sensory) but motor signals are delivered to GIT, cardiovascular and respiratory system

42
Q

What is (vaso-vagal) syncope ?

A

Fainting
When the vagus nerve is overstimulated and blood pressure quickly drops

CNM S2 Cranial Nerves 1-10 (1 decks)

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