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ANAT3004 > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

Where do cranial nerves arise from?

A

Nuclei of grey matter in the brain

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2
Q

Which type of fibre tends to be hitch hiker nerves?

A

Autonomic fibres

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3
Q

Which cranial nerve synapses in the olfactory bulb? How does it get there

A

Olfactory nerve fibres (CN1) pass through the cribriform plate and synapse on the underside of the bulb

This is located in the ANTERIOR CRANIAL FOSSA

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4
Q

Which nerves can be found in the middle cranial fossa?

A

Optic nerve (CN III goes through optic canal)

Trigeminal (CN V- opthalmic through superior orbital fissure, maxillary through foramen rotundum, mandibular through foramen ovale)

Occulomotor (CN III- superior orbital fissure)
Trochlear (CN IV- superior orbital fissure)
Abducens (CN VI- superior orbital fissure)

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5
Q

Which nerves travel through the internal acoustic meatus?

A 
Facial nerve (CN VII)
Nervus intermedius (part of facial)
Vestibulocochlear (CN VIII)
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6
Q

Which nerves travel through the jugular foramen?

A

Glossopharyngeal (CN IX)
Vagus (CN X)
Accessory (CN XI)

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7
Q

Which cranial fossa is the hypoglossal nerve in?

A

Hypoglossal canal in the posterior cranial fossa

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8
Q

Which cranial fossa is the spinal root accesory nerve found in?

A

Posterior cranial fossa

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9
Q

Where is the trigeminal ganglion found (sensory)

A

In Meckel’s cave

Within two layers of sura overlying posteromedial petrous bone

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10
Q

Which sensory ganglia is associated with the facial nerve and where is it found?

A

Geniculate ganglion (sensory)
In facial canal above middle and inner ear
In petrous temporal bone anterosuperior to inner ear

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11
Q

Which sensory ganglia is associated with the vestibulocochlear nerve and where is it found?

A

Spiral and vestibular ganglia
Spiral within cochlea
Vestibular in internal acoustic meatus

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12
Q

Which sensory ganglia are associated with the glossopharyngeal nerve and where are they found?

A

Superior and inferior glossopharyngeal ganglia

Within jugular foramen

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13
Q

Which 2 sensory ganglia are associated with the vagus nerve and where are they found?

A

Superior (jugular) and inferior (nodose)

Found immediately below jugular foramen

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14
Q

What are the three divisions of the trigeminal nerve? Where do they travel through?

A

Opthalmic (sensory)- superior orbital fissure
Maxillary (sensory)- foramen rotundum
Mandibular (sensory and somatic motor)- foramen ovale

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15
Q

What are the three main branches of the opthalmic division of trigeminal?

A

Lacrimal (lateral)
Frontal (central)
Nasocillary (deep and medial)

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16
Q

T/F:

cutaneous branches of the frontal nerve (opthalmic branch) travel through anterior and posterior ethmoid foramina

A

False

Branches of the nasocillary nerve go through the anterior and posterior ethmoid foramina to the ethmoid air cells

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17
Q

T/F:

The cutaneous branches of the frontal nerve are the supratrochlear (medial) and supraorbital (lateral)

A

True

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18
Q

What does the cillary ganglion receive?

A

Pre-ganglionic fibres from adjacent occulomotor nerve via a special connecting branch in the orbit

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19
Q

T/F:
The maxillary division of trigeminal is transmitted via foramen rotundum into the pterygopalantine fossa- synapses with the pterygopalantine ganglion and travels via the inferior orbital fissure to the orbit

A

False

DOES NOT synapse in the pterygopalantine ganglia however it does pass through it

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20
Q

What are the two terminal cutaneous branches of the maxillary division of trigeminal?

A

Infraorbital

Zygomaticoorbital

21
Q

What does the zygomaticoorbital nerve terminate into?

A

Zygomatico temporal

Zygomatico facial

22
Q

T/F:
The trunk of the mandibular nerve branches into the meningeal branch and nerve to medial pterygoid (provides motor input to medial pterygoid and tensor tympanic and tensor palate)

A

True

23
Q

T/F:

The anterior portion of the mandibular nerve is mostly sensory

A

false

mostly motor

24
Q

T/F:

Anterior portion of mandibular nerve provides motor innervation to lateraly pterygoid, masseter, temporalis

A

True

25
Q

T/F:

Anterior portion of mandibular nerve provides motor to buccal

A

False

Sensory to buccal

26
Q

T/F:

Mylohyoid nerve is a nerve from the posterior portion of the maxillary nerve

A

False

Posterior portion of MANDIBULAR nerve

27
Q

Which artery does the cutaneous auriculotemproal nerve surround?

A

Middle meningeal artery

28
Q

What type of fibres does the auriculotemproal nerve carry?

A

Sensory and parasympathetic hitchikers from glossopharyngeal nerve

29
Q

List some visible branches of the posterior division of the mandibular nerve

A 
Inferior alveolar nerve
Mylohyoid nerve
Lingual nerve
Chorda tympani
Mental nerve
30
Q

T/F:

The inferior alveolar nerve is a branch of the maxillary nerve

A

False

Branch of the posterior division of the mandibular nerve

31
Q

T/F:

Hypoglossal nerve passes deep to the posterior belly of digastric

A

False

Passes deep to intermediate tendon of digastric

32
Q

T/F:

Spinal accessory crosses the floor of the anterior triangle between SCM and trapezius

A

False

Crosses the floor of POSTERIOR triangle between SCM and trapezius

33
Q

Where does the left recurrent laryngeal branch of vagus pass under?

A

Under the arch of aorta on the left

34
Q

Where does the right recurrent laryngeal branch of vagus pass under?

A

Under the right subclavian artery on the right

35
Q

Which muscle would you find the glossopharyngeal nerve on?

A

Stylopharyngeus

36
Q

T/F:
The glossopharyngeal nerve and stylopharyngeus muscle pass between superior and middle pharyngeal constrictor muscles of pharynx

A

True

37
Q

List the branches of the maxillary nerve

A 
Meningeal branches
Ganglion branches
Posterior superior alveolar nerves (travel through alveolar canals)
Middle superior alveolar nerve
Anterior superior alveolar nerve
Zygomaticoorbital nerve
Infraorbital nerve
38
Q

T/F:

White rami transmit post-ganglionic fibres

A

False

they transmit pre-ganglionic fibres from the spinal cord to the sympathetic trunk/ganglia

39
Q

List the sensory and parasympathetic ganglia associated with the facial nerve

A 
Sensory= geniculate ganglia
Parasympathetic= pterygopalatine and submandibular
40
Q

List the sensory and parasympathetic ganglia associated with the glossopharyngeal nerve

A 
Sensory= superior and inferior glossopharyngeal
Parasympathetic= otic
41
Q

T/F:

The ciliary ganglion is a sensory ganglion associated with the occulomotor cranial nerve

A

False

Parasympathetic ganglia

42
Q

T/F:

The trigeminal ganglion is sensory

A

True

43
Q 
T/F:
The superior (jugular) and inferior (nodose) ganglia associated with the vagus nerve are parasympathetic
A

False

They are sensory

44
Q

T/F:
The frontal nerve (opthalmic division of trigeminal) gives off a medial supratrochlear branch and a lateral supraorbital branch

A

False

Medial branch is supraorbital and lateral branch is supratrochlear

45
Q

Do the meningeal branches branch off the maxillary nerve before or after it enters foramen rotundum?

A

Before

46
Q

After the maxillary nerve travels through the inferior orbital fissure, what does it branch into?

A

Zygomaticoorbital and infraorbital branches

47
Q

T/F:

The maxillary nerve gives off posterior superior alveolar nerves after travelling through the infraorbital fissure

A

False

Posterior superior alveolar branch off before the maxillary nerve travels through the infraorbital fissure

48
Q

T/F:

The middle superior and anterior superior alveolar nerves are branches of the infraorbital nerve

A

True

49
Q

T/F:

The mylohyoid nerve is a sensory nerve of the posterior mandibular division of trigeminal

A

False

Mylohyoid is motor (posterior part of mandibular division is mostly sensory except for mylohyoid)

ANAT3004 (17 decks)

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