Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

NE Exam 1 > Head Myology > Flashcards

Head Myology Flashcards

1
Q

List the Muscles of Facial Expression

A
  • Occipitofrontalis (Epicranius)
  • Orbicularis Oculi
  • Levator Labii Superioris
  • Zygomaticus Major
  • Zygomaticus Minor
  • Levator Anguli Oris
  • Depressor Labii Inferioris
  • Depressor Anguli Oris
  • Orbicularis Oris
  • Buccinator
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Occipitofrontalis - Frontal Belly
O:
I:
A:
Innervation:

A

O: Epicranial apopneurosis
I: Skin and subcutaneous tissue of eyebrows and forehead
A: Elevates eyebrows, wrinkles skin of forehead
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Orbicularis Oculi - Orbital Part
O:
I:
A:
Innervation:

A

O: Medial orbital margin, medial palpebral ligament, lacrimal bone
I: Skin around orbital margin, tarsal plates
A: Tightly closes eyelids, aids in winking
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Orbicularis Oculi - Palpebral Part
O:
I:
A:
Innervation:

A

O: Medial orbital margin, medial palpebral ligament, lacrimal bone
I: Skin around orbital margin, tarsal plates
A: Gently closes eyelids
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Orbicularis Oris
O:
I:
A:
Innervation:

A

O: Median plane of maxilla bone and deep surface of skin
I: Mucous membrane of lips
A: Oral sphincter – compresses and protrudes lips (kissing), resists distension (when blowing)
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Levator Labii Superioris Aleque Nasi
O:
I:
A:
Innervation:

A

O: Maxilla bone, lateral to the nasal bone
I: Upper lip and alar cartilage of the nose
A: Elevates the upper lip, opens nostrils
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Levator Labii Superioris
O:
I:
A:
Innervation:

A

O: Maxilla (frontal process) and infraorbital region
I: Skin of upper lip, alar cartilages of nose
A: Elevates upper lip, dilates nostril, raises angle of the mouth
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Zygomaticus Major
O:
I:
A:
Innervation:

A

O: Zygomatic bone (lateral surface, posterior part)
I: Skin at corner of mouth
A: Pulls corner of mouth superiorly and laterally
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Zygomaticus Minor
O:
I:
A:
Innervation:

A

O: Zygomatic bone (lateral surface, posterior part)
I: Upper lip just medial to corner of the mouth
A: Pulls upper lip superiorly
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Levator Anguli Oris
O:
I:
A:
Innervation:

A

O: Maxilla (below infraorbital foramen)
I: Skin at corner of mouth
A: Raises angle of mouth, helps form nasolabial furrow
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Depressor Labii Inferioris
O:
I:
A:
Innervation:

A

O: Mandible (anterior portion of oblique line)
I: Lower lip at midline; blends with muscles from opposite side (contralateral depressor labii inferioris and the orbicularis oris)
A: Pulls lower lip inferiorly and laterally
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Mentalis
O:
I:
A:
Innervation:

A

O: Mandible (incisive fossa)
I: Skin of chin
A: Elevates and protrudes lower lip
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Depressor Anguli Oris
O:
I:
A:
Innervation:

A

O: Mandible (oblique line below canine, premolar and first molar teeth)
I: Skin at corner of the mouth; blends with orbicularis oris
A: Pulls angle of mouth inferiorly and laterally
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Nasalis
O:
I:
A:
Innervation:

A

O: Maxilla (superior region of canine ridge)
I: Nasal cartilages
A: Flares nostrils by drawing ala (side) of nose toward nasal septum
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the two bellies of the Occipitofrontalis muscle?

A
  • Frontal Belly
  • Occipital Belly
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Occipitofrontalis - Occipital Belly
O:
I:
A:
Innervation:

A

O: Lateral 2/3rds of superior nuchal line
I: Epicranial aponeurosis
A: Retracts scalp; increasing effectiveness of frontal belly
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Corrugator Supercilii
O:
I:
A:
Innervation:

A

O: Medial end of superciliary arch
I: Skin superior to middle of supra-orbital margin and superciliary arch
A: Draws eyebrow medially and inferiorly, creating vertical wrinkles above nose (shows concern or worry)
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Risorius
O:
I:
A:
Innervation:

A

O: Fascia over masseter muscle
I: Skin of corner of mouth
A: Retracts corner of mouth as in grimacing
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Buccinator
O:
I:
A:
Innervation:

A

O: Mandible, alveolar processes of maxilla and mandible, pterygomandibular raphe
I: Angle of mouth, orbicularis oris
A: Presses cheek against molar teeth, working with tongue to keep food between occlusal surfaces and out of oral vestibule; expels air from oral cavity/resists distention when blowing; unilateral: draws mouth to one side
Innervation: Facial N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What are the two “kissing muscles”?

A
  • Buccinator
  • Orbicularis Oris
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What muscles creates expressions of surprise and/or fright?

A

Occipitofrontalis (also called Epicranius)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What are the 3 smiling and laughing muscles?

A
  • Zygomaticus Major
  • Zygomaticus Minor
  • Levator Anguli Oris
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What muscle closes your mouth and is used to pout?

A

Orbicularis Oris

24
Q

What two muscles depressor the lower lip?

A
  • Depressor Labii Inferioris
  • Depressor Anguli Oris
25
Q

There are generally no ___ insertions for the muscles of facial expression

A

Bony
(these muscles insert into skin and other muscles of facial expression)

26
Q

What are the 4 main muscles of mastication?

A
  • Masseter
  • Temporalis
  • Medial Pterygoid
  • Lateral Pterygoid
27
Q

Masseter
O:
I:
A:
Innervation:

A

O: Zygomatic arch
I: Lateral ramus and angle of mandible (masseteric tuberosity)
A: Elevates mandible and closes jaw; limited contribution to protrusion of mandible
Innervation: Mandibular N (CN V3) via Masseteric N

28
Q

What nerve Innervates the Muscles of Masstication?

A

Mandibular Division of Trigeminal N (CN V3)

29
Q

Temporalis
O:
I:
A:
Innervation:

A

O: Temporal fossa (inferior temporal line)
I: Coronoid process of mandible (apex and medial surface)
A: Vertical Fibers- elevate mandible; Horizontal Fibers- retracts mandible; Unilateral- lateral movement of mandible (chewing)
Innervation: Mandibular N (CN V3) via Deep Temporal N

30
Q

Lateral Pterygoid
O:
I:
A:
Innervation:

A

O: Superior Head- greater wing of Sphenoid bone; Inferior Head- lateral pterygoid plate
I: Superior Head- TMJ; Inferior Head- Mandible (condylar process)
A: Bilateral- protrudes mandible (pulls articular disk forward); Unilateral- lateral movements of mandible (chewing)
Innervation: Mandibular N (CN V3) via Lateral Pterygoid N

31
Q

Medial Pterygoid
O:
I:
A:
Innervation:

A

O: Superficial Head- Maxilla (tuberosity); Deep Head- Medial surface of lateral pterygoid plate and pterygoid fossa
I: Pterygoid tuberosity on medial surface of the mandibular angle
A: Bilateral- elevates mandible with masseter, contributes to protrusion; Unilateral- small grinding movements
Innervation: Mandibular N (CN V3) via Medial Pterygoid N

32
Q

Platysma
O:
I:
A:
Innervation:

A

O: Subcutaneous tissue of infraclavicular and supraclavicular regions
I: Base of mandible, skin of cheek and lower lip, angle of mouth, Orbicularis Oris
A: Depresses mandible against resistance, tenses skin of inferior face and neck (conveying tension and stress)
Innervation: Cervical Branch of Facial N

33
Q

What 8 muscles are innervated by CN V3?

A
  • Masseter
  • Temporalis
  • Medial Pterygoid
  • Lateral Pterygoid
  • Mylohyoid
  • Anterior Belly of Digastric
  • Tensor Tympani
  • Tensor Veli Palatini
34
Q

What are the 3 Salivary Glands?

A
  • Parotid
  • Submandibular
  • Sublingual
35
Q

Patorid Gland

A
  • Largest
  • Serous gland encapsulated by tough fascia
36
Q

Submandibular Gland

A
  • Located in Submandibular Triangle inferior to the Mandible
  • Mixed serous and mucous gland
37
Q

Sublingual Gland

A
  • Located within oral cavity beneath tongue
  • Mixed serous and mucous gland but largely mucous secreting
38
Q

Parotid Duct

A
  • Runs over Masseter muscle, pierces Buccinator and opens on surface of oral cavity near upper second molar
39
Q

What are the 5 structures found within the Parotid Gland?

A
  • Parotid Duct
  • Facial N (exits stylomastoid foramen and enters the gland after innervating the stylohyoid and posterior digastric m)
  • Retromandibular V
  • External Carotid A
  • Auriculotemporal N (CN V3 - sensory)
40
Q

What are the 9 main Arteries of the face and scalp?

A
  • Facial
  • Occipital
  • Posterior Auricular
  • Superficial Temporal
  • Transverse Facial
  • Supraorbital
  • Supratrochlear
  • Intraorbital
  • Mental
41
Q

Effect of tumor in Parotid Duct

A

Affects insertion of Facial N and blood supply

42
Q

Facial Vein empties into ___ ___ ___ but does have other anastomoses.

A

Internal Jugular Vein

43
Q

___ ___ Veins join __ Vein to form the Retromandibular Vein

A
  • Superficial Temporal
  • Maxillary
44
Q

What veins have anastomoses with Intracranial Veins?

A
  • Supratrochlear (terminal branch of Opthalmic V)
  • Supraorbital (terminal branch of Opthlamic V)
  • Angular (terminal branch of Facial V)

***Potential spread of exterior infections into the cranium b/c of these anastomoses

45
Q

What type of joint is the TMJ?

A

Modified Hinge type of Synovial Joint

46
Q

What movements occur at the TMJ?

A
  • Translation (gliding)
  • Rotation (pivoting)
  • Flexion (elevation)
  • Extension (depression)
47
Q

Bony Articular Surfaces of TMJ

A
  • Mandibular Fossa and Articular Tubercle of Temporal bone superiorly
  • Head of mandible inferiorly
48
Q

What attaches to the margins of teh articular cartilage on the temporal bone and around the neck of the mandible?

A

Loose Fibrous layer of the TMJ joint capsule

49
Q

The two bony articular surfaces of the TMJ are completely separated by intervening:

A
  • Articular Cartilage
  • Fibrocartilage

** this creates separate superior and inferior articular cavities, or compartments, lined by separate superior and inferior synovial membranes

50
Q

Muscles of the Palate - Tensor Veli Palatini
O:
I:
A:
Innervation:

A

O: Scaphoid fossa of medial pterygoid plate, spine of sphenoid bone, cartilage of auditory tube
I: Palatine aponeurosis
A: Tenses soft palate, acts on pharyngotympanic tube for depressurizing middle ear
Innervation: Medial Pterygoid Branch of CN V3 via Otic Ganglion

51
Q

Muscles of the Palate - Levator Veli Palatini
O:
I:
A:
Innervation:

A

O: Cartilage of the auditory tube and petrous temporal bone
I: Palatine aponeurosis
A: Elevates the tensed palate when swallowing/yawning, acts on pharyngotympanic tube
Innervation: Pharyngeal Branch of Vagus N via Pharyngeal Plexus

52
Q

Paralysis of Levator Veli Palatini and/or Tensor Veli Palatini results in:

A
  • Reflux of oral contents into nasal cavity
  • Pharyngotympanic Tube dysfunction
53
Q

5 Layers of the Scalp (Superficial -> Deep)

A

SCALP
(1) Skin (integument)
(2) Connective Tissue (Dense CT)
(3) Aponeurosis
(4) Loose areolar connective tissue
(5) Pericranium (periosteum)

54
Q

Motor Innervation to all muscles of facial expression is by:

A

CN VII (Facial N)

55
Q

Four Major Groups of Muscles of Facial Expression

A

(1) Mouth
(2) Nose
(3) Eye
(4) Forehead

NE Exam 1 (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions