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BDS3 Anatomy Student 3 > Anatomy W3 - The Face > Flashcards

Anatomy W3 - The Face Flashcards

1
Q

What does the infraorbital nerve’s sensory supply?

A

The front of the cheek, the side of the nose, the lower eyelid and the upper lip.

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2
Q

What nerve supplies the muscles of facial expression?

A

The facial nerve

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3
Q

What pharyngeal arch gives rise to the muscles of facial expression and is supplied by the facial nerve?

A

The 2nd arch

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4
Q

List the muscles of facial expression.

A

The frontalis

The oblicularis oculi - palpable and orbital parts

The procerus

Oblicualris oris

Levator labia superioris
Depressor labia inferioris

Levator anguli oris
Depressor anguli oris

Zygomaticus major and minor

Risorius

Levator labii superior alaeque nasi

Platysma

Buccinator

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5
Q

What is the epicranial aponeurosis?

A

Fleshy fibres that give way to a flattened tendon which runs over the vault of the skull.

Unites bellies of the frontalis

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6
Q

What is the fucntion of the frontalis?

A

Wrinkle the forehead
Raise eyebrows

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7
Q

Where is the palpable part of the oblicularis oculi?

A

Fine muscle inside the eyelid

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8
Q

What is the function of the palpable part of the oblicularis oculi?

A

Blinking

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9
Q

Where is the orbital part of the oblicularis oculi?

A

Coarser bundles of skeletal muscle beyond the area of the eyelid

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10
Q

What is the function of the orbital part of the oblicularis oculi?

A

Close the eye tightly

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11
Q

What is the function of the medial palpable ligament?

A

Provides attachment for the muscles

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12
Q

What is the function of the procerus?

A

Draws the medial ends of the eyebrows together
(in bright light/concentration)

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13
Q

Where is the oblicularis oris?

A

Fine skeletal muscle around the lips beyond the vermillion border.

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14
Q

What is the function of the oblicularis oris?

A

Ensures lips are sealed whilst eating/drinking

Pursing/protruding the lips

Has a role in speech

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15
Q

What is the function of the levitator labia superioris?

A

Elevates the upper lip

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16
Q

What is the function of the depressor labia inferioris?

A

Depresses the lower lip

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17
Q

What is the function of the levitator anguli oris?

A

Pulls the corner of the mouth up

18
Q

What is the function of the depressor anguli oris?

A

Pulls the corner of the mouth down

19
Q

What is the function of the risorius?

A

Pulls the corner of the mouth to the side in a rising smile/grin

20
Q

What is the function of the levitator labii superioris alaeque nasi?

A

Elevates the side of the nose and the upper lip

Dilates the nostrils

Involved in sneering/sneezing

21
Q

What is the function of the platysma?

A

Wrinkles the skin of the neck and maintains the tone in the skin of the neck.

22
Q

What is the function of the buccinator?

A

Gives tone to the cheek.

Role in mastication:
Prevents food getting stuck in the vestibules of the cheek.
Pushes food between the teeth.

Expelling air forcefully - whistling & playing an instrument

23
Q

Why is swelling of the parotid gland painful?

A

Parotid gland is surrounded by dense fascia.

This fascia doesn’t stretch therefore the pressure within the gland rises and causes pain.

24
Q

What muscles of facial expression is supplied by the temporal branch of the facial nerve?

A

Upper part of the oblicularis oculi

Procerus

Frontalis

25
Q

What muscles of facial expression is supplied by the zygomatic branch of the facial nerve?

A

The lower part of the oblicularis oculi
Zygomaticus major and minor
Levator Labii Superioris (plus plaque nasi)
Levator anguli oris
Risorius
Procerus?

26
Q

What muscles of facial expression is supplied by the buccal branch of the facial nerve?

A

Buccinator

Oblicularis oris

The muscles elevating into the upper lip
- Levator labi superiors
- Zygomaticus major
- lavator anguli oris
- alequae nasi

Procuses

Rizorius

27
Q

What muscles of facial expression is supplied by the marginal mandibular branch of the facial nerve?

A

The muscles of the lower lip:
Depressor labii inferioris
Depressor anguli oris

Oblicularis oris

28
Q

What muscles of facial expression is supplied by the cervical branch of the facial nerve?

A

The platysma

29
Q

Describe the appearance of the facial VEIN.

A

Straight

30
Q

Describe the appearance of the facial ARTERY.

A

Twisted

31
Q

What strcuture does the facial VEIN fill into?

A

The internal jugular vein

32
Q

What structure does the facial ARTERY receive blood from?

A

The external carotid

33
Q

Why do deep cuts in the lip cause large bleeds?

A

Rupture of the end to end anastomoses across the midline between the right and left superior labial branches of the facial artery In the upper lip.

and rupture of the end to end anastomoses across the midline between the right and left inferior labial branches of the facial artery In the lower lip.

34
Q

What kind of secretions are present in the parotid gland?

A

Serous

35
Q

Where is the opening to the parotid duct?

A

2nd upper molar

36
Q

What structures are present within the parotid gland?

A

The facial nerve

The external carotid artery

The Retromandibular vein

37
Q

Describe how cuts will heal if they go ALONG the lines of stress.

A

If cuts go along they will heal nicely with less noticeable scars

38
Q

How would you test for function of the facial nerve?

A

Raise eyebrows -temporal branch

Shut eyes tight - temporal and zygomatic branches

Smile - buccal branch
Sad face - marginal mandibular branch

Puffing cheeks - buccal and marginal mandibular branches

Wrinkle neck - cervical branch

39
Q

What nerve supplies the buccinator?

A

The buccal branch of the facial nerve

40
Q

Describe the arrangement of fibres in the buccinator.

A

Upper fibres run into the upper lip and blend into the oblicularis oris

The central fibres split into 2;
The upper fibres cross and go into the lower lip
The lower fibres cross and go into the upper lip.

The lower fibres run into the lower lip and blend with the oblicularis oris

BDS3 Anatomy Student 3 (26 decks)

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