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Module 202 Neuroscience & behaviour > T2 L1 Face, temporal & infra temporal fossa > Flashcards

T2 L1 Face, temporal & infra temporal fossa Flashcards

1
Q

What are the key muscles of the face?

A 
Occipitofrontalis 
Orbicularis occuli
Orbicularis oris
Zygomaticus major
Platysma
Buccinator
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2
Q

What does the occipitofrontalis do?

A

Elevates eyebrows

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3
Q

What does the orbicularis occuli do?

A

Closes eyelids

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4
Q

What does the orbicularis oris do?

A

Closes mouth

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5
Q

What does the zygomaticus major do?

A

Elevates labial commisure

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6
Q

What does the platsyma muscle do?

A

Depresses mandible against resistance, tenses facia of neck

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7
Q

What does the buccinator muscle do?

A

Compresses cheek

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8
Q

What innervates the muscles of facial expression?

A

Facial nerve

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9
Q

What supplies the cutaneous innervation of the face?

A

Trigeminal nerve

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10
Q

What is the type & exit of cranial nerve VII (facial)

A

Type: sensory, taste, general motor & visceral motor
Exit: internal acoustic meatus, facial canal, stylomastoid foramen

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11
Q

What are the branches of the facial nerve?

A

Motor - posterior auricular, temporal, zygomatic, buccal, marginal, mandibular, cervical
Parasympathetic branches to pterygopalatine ganglion

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12
Q

How is taste supplied by cranial nerve VII?

A

Via chorda tympani via lingual nerve from anterior 2/3rds of tongue

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13
Q

What does the general sensory part of cranial nerve VII supply?

A

The skin over external auditory meatus

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14
Q

What are the 3 salivary glands in the head?

A

Parotid
Submandibular
Sublingual

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15
Q

Describe the path of the parotid duct

A

Leaves gland at anterior edge & passes through corner of mouth
Turns deep through buccinator
Opens into oral cavity at upper second molar tooth

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16
Q

What runs through the parotid gland?

A

Retromandibular vein
External carotid artery
Facial nerve

17
Q

What are the muscles of mastication?

A

Temporalis
Masseter
Medial pterygoid
Lateral pterygoid

18
Q

What does the temporalis muscle do?

A

Elevation of jaw

Retraction of jaw

19
Q

What does the masseter muscle do?

A

Elevation of jaw

20
Q

What does the medial pterygoid muscle do?

A

Elevation

Side to side

21
Q

What does the lateral pterygoid muscle do?

A

Protrusion

Depression

22
Q

What supplies the muscles of mastication?

A

Motor branch of V3

23
Q

What is the type and exit of cranial nerve V (trigeminal)?

A

Type: somatic (general sensory) & somatic motor to derivatives of 1st pharyngeal arch
Exit: V1 = superior orbital fissure, V2 = foramen rotundum, V3 = foramen ovale

24
Q

What are the 3 divisions of cranial nerve V?

A

Ophthalmic
Maxillary
Mandibular

25
Q

What is the type & exit of V1 (ophthalmic) nerve

A

Type: sensory fibres skin, mucous membranes, conjunctive, front of head & nose
Exit: superior orbital fissure

26
Q

What are the branches of the V1 nerve?

A

Lacrimal
Nasociliary
Frontal

27
Q

What is the type & exit of V2 (maxillary)?

A

Type: sensory fibres dura, nasal, upper cheek, lip, teeth
Exit: foramen rotundum

28
Q

What is the path of V2?

A

Enters pterygopalatine fossa, gives off branches to pterygopalatine ganglion through inferior orbital fissure

29
Q

What are the branches of the V2 nerve?

A

Infraorbital
Zygomatiofacial
Zygomaticotemporal

30
Q

What is the type & exit of V3 (mandibular)?

A

Type: mixed sensory, lower face, lip, teeth. Motor to muscles of mastication
Exit: foramen ovale

31
Q

What are the branches of the V3 nerve?

A

Sensory - auriculotemporal, buccal, mental, lingual, inferior alveolar
Motor - temporalis, masseter, medial & lateral pterygoids, nerve to mylohyoid
Parasympathetic to salivary glands

32
Q

Where is the temporal fossa located?

A

On the lateral surface of the skull

33
Q

What does the temporal fossa contain?

A

Temporalis muscle

Branches of V2

34
Q

What does the infratemporal fossa contain?

A 
Medial & lateral pterygoids
Maxillary artery
V3 
Branches of facial nerve
Glossopharyngeal nerve
Pterygoid plexus of veins
35
Q

What is the arterial supply to the face?

A

From the external carotid artery

36
Q

What are the key branches of the external carotid artery?

A

Lingual
Facial
Maxillary
Superficial temporal

37
Q

What drains the majority of the face?

A

The facial vein

38
Q

What does the facial vein drain into?

A

The internal jugular vein

39
Q

What does the superficial temporal vein drain into?

A

The external jugular vein

Module 202 Neuroscience & behaviour (39 decks)

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