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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
Cranial nerve 11. - name, function, location
**11. Accessory** (spinal) Innervates Trapezius and sternocleidomastoid Shoulder elevation & Neck rotation *Medulla oblongata*
26
Cranial nerve 12. - name, function, location
**12. Hypoglossal** Tongue movement and speech *Medulla oblongata*
27
How many eye muscles does the oculomotor nerve (3.) move?
4 out of 6 Moves eyeball Elevates eyelid
28
How many eye muscles does the trochlear nerve (9) move?
1 of 6 Rotates eyes Used in reading
29
How many eye muscles does the abducens nerve (6.) move?
1 of 6 Abducts eye
30
Damage to the oculomotor, trochlear or abducens nerves, leads to?
**Strabismus** (squint) **Ptosis** (drooping of upper eyelid) **Diplopia** (double vision)
31
What is strabismus?
One eye crossed (squint)
32
What is ptosis?
Drooping of upper eyelid | Damage to 3. oculomotor
33
What is diplopia?
Double vision
34
What are the branches of the trigeminal nerve (5.)?
Ophthalmic Maxillary Mandibular
35
What is the vagus nerve?
Largest nerve of the autonomic nervous system
36
What information does the vagus nerve carry?
*All* sensory information from chest and abdomen (Heart, GIT, lungs) Motor and sensory information from chest and abdomen
37
What can damage to the vagus nerve cause?
Tachycardia Dysphagia Vaso-vagal syncope (fainting)
38
Mnemonic for remembering the cranial nerve functions
``` 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
Rule for cranial nerve locations
2,2,4,4 * 2 - Cerebrum * 2 - Midbrain * 4 - Pons * 4 - Medulla oblongata
40
Why is the optic nerve useful to assess intracranial lesions ?
The optic nerve spans through the majority of the cranium. Any abnormal pressure in the brain would likely press on this nerve
41
Is the vagus nerve sensory or motor ?
Both 90% afferent nerve fibres (sensory) but motor signals are delivered to GIT, cardiovascular and respiratory system
42
What is (vaso-vagal) syncope ?
Fainting When the vagus nerve is overstimulated and blood pressure quickly drops

CNM S2 Cranial Nerves 1-10 (1 decks)

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