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Anatomy of Nervous System > Cranial Nerves of the Brain > Flashcards

Cranial Nerves of the Brain Flashcards

1
Q

What is the opening in the base of the skull for the olfactory nerve (CN I)?

A

Cribriform plate of ethmoid bone

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2
Q

What is the opening in the base of the skull for the optic nerve (CN II)?

A

Optic foramen

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3
Q

What is the opening in the base of the skull for the oculomotor nerve (CN III)?

A

Superior orbital fissure

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4
Q

What is the opening in the base of the skull for the trochlear nerve (CN IV)?

A

Superior orbital fissure

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5
Q

What is the opening in the base of the skull for the ophthalmic branch of trigeminal nerve (CN V1)?

A

Superior orbital fissure

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6
Q

What is the opening in the base of the skull for the abducens nerve (CN VI)?

A

Superior orbital fissure

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7
Q

What is the opening in the base of the skull for the facial nerve (CN VII)?

A

Internal acoustic meatus

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8
Q

What is the opening in the base of the skull for the vestibulocochlear nerve (CN VIII)?

A

Internal acoustic meatus

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9
Q

What is the opening in the base of the skull for the glossopharyngeal nerve (CN IX)?

A

Jugular foramen

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10
Q

What is the opening in the base of the skull for the vagus nerve (CN X)?

A

Jugular foramen

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11
Q

What is the opening in the base of the skull for the accessory nerve (CN XI)?

A

Jugular foramen

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12
Q

What is the opening in the base of the skull for the hypoglossal nerve (CN XII)?

A

Hypoglossal foramen

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13
Q

What is the opening in the base of the skull for the maxillary branch of trigeminal nerve (CN V2)?

A

Foramen rotunda

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14
Q

What is the opening in the base of the skull for the mandibular branch of trigeminal nerve (CN V3)?

A

Foramen ovale

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15
Q

What are the types of fibres carried in the CN I?

A

Special visceral sensory

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16
Q

What are the structures found on the olfactory nerve pathway?

A

Olfactory bulb and tract

17
Q

What are the types of fibres carried in the CN II?

A

Special somatic sensory

18
Q

What are the types of fibres carried in the CN III?

A

General somatic motor

General visceral motor - parasympathetic

19
Q

What are the types of fibres carried in the CN IV?

A

General somatic motor

20
Q

What are the types of fibres carried in the CN VI?

A

General somatic motor

21
Q

Describe the pathway of CN II

A
  1. Optic nerve
  2. Optic chiasma
  3. Optic tract
  4. Lateral geniculate nucleus of thalamus
  5. Optic radiation
22
Q

What are the branches off of the mandibular branch of the trig menial never (CN V3)?

A

Inferior alveolar nerve and lingual nerve

23
Q

What are the types of fibres carried in the CN V1?

A

General somatic sensory (scalp, forehead and nose)

24
Q

What are the types of fibres carried in the CN V2?

A

General somatic sensory (cheeks, lower eye lid, nasal mucosa, upper lip, upper teeth and palate)

25
Q

What are the types of fibres carried in the CN V3?

A

General somatic sensory (anterior 2/3 tongue, skin over mandible and lower teeth) and special visceral motor (muscle of mastication)

26
Q

What are the types of fibres carried in the CN VII?

A

General somatic sensory
Special visceral sensory
Special visceral motor
General visceral motor

27
Q

What are the types of fibres carried in the CN VIII?

A

Special somatic sensory

28
Q

What are the types of fibres carried in the CN IX?

A 
General somatic sensory 
Special visceral sensory 
Special somatic sensory 
Special visceral motor
General visceral motor
29
Q

What are the types of fibres carried in the CN XI?

A

General somatic motor

30
Q

What are the types of fibres carried in the CN XII?

A

General somatic motor

31
Q

What plexus does CN X form part of and what does it innervate?

A

Oesophageal plexus and smooth muscle of oesophagus

32
Q

Name two branches of CN X that innervates the muscles of the layrnx

A

Superior laryngeal and recurrent laryngeal

33
Q

Which of the cranial nerves have a parasympathetic component?

A

CN III, VII, IX and X

34
Q

Which of the cranial nerves are attached directly to the brain?

A

CN I and II

35
Q

Which of the cranial nerves are attached to the midbrain?

A

CN III and IV

36
Q

Which of the cranial nerves are attached directly to the pons?

A

CN V

37
Q

Which of the cranial nerves are attached directly to the pontine-medulla junction?

A

CN VI, VII, VIII

38
Q

Which of the cranial nerves are attached to the medulla?

A

CN IX, X, XI and XII

Anatomy of Nervous System (11 decks)

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