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ANAT 316 > face and neck muscles > Flashcards

face and neck muscles Flashcards

1
Q

about muscles of facial expression

A
  • superfifcal muscles
  • origins –> facial bones or adjacent muscles
  • insertions–> skin
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2
Q

functions of muscles of facial expression

A
  • sphincters/dilators
  • facial expression alteration
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3
Q

frontalis

A

A: draws scalp back and raises eyebrows
I: CN VII (temporal)

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4
Q

blood supply + venous drainage of frontalis

A

blood supply: internal and external carotid a
venous drainage: ophthalmic v

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5
Q

corrugator supercilii

A

A: draws eyebrows medially/inferiorly
I: CN VII (temporal)

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6
Q

blood supply + venous drainage of corrugator supercilii

A

blood supply: ophthalmic a
venous drainage: superior ophthalmic v

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7
Q

orbicularis oculi

A

3 parts
1. orbital (wink-tightly close eye)
2. palpebral (blink- lossely close eye)
3. lacrimal (compress lacrimal sac)

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8
Q

blood supply + venous drainage of orbicularis oculi

A

innervation: CN VII (temporal and zygomatic)
blood supply: facial a, superficial temporal a. & ophthalmic a.

venous drainage: facial v

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9
Q

orbicularis oris

A

A: purse and protrude lips
I: CN VII (buccal and mandibular)
blood supply: facial a.
venous drainage: facial v

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10
Q

buccinator

A

A: pull cheeks inward
I: CN VII (buccal)

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11
Q

blood supply + venous drainage of buccinator

A

blood supply: buccal and facial a
venous drainage: pterygoid plexus & internal maxillary v

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12
Q

zygomaticus major

A

A: superior/lateral movement of mouth corners
I: CN VII

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13
Q

blood supply + venous drainage zygomaticus major

A

blood supply: facial a
venous drainage: facial v

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14
Q

zygomaticus minor

A

A: superior/lateral movement of mouth corners
I: CN VII (zygomatic & buccal)

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15
Q

blood supply + venous drainage zygomaticus minor

A

blood supply: facial a.
venous drainage: facial v

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16
Q

platysma

A

A: inferior movement of mouth corners
I: CN VII (cervical & mandibular)

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17
Q

blood supply + venous drainage platysma

A

blood supply: facial a
venous drainage: facial v

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18
Q

list all the muscles of facial expression

A
  • frontalis
  • zygomaticus minor
  • zygomaticus major
  • platysma
  • corrguator supercilli
  • orbicularis oculi
  • buccinator
  • orbicularis oris
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19
Q

about muscles of mastication

A

both superficial and deep muscles

functions:
- movement of the mandible

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20
Q

list the muscles of mastication

A
  • temporalis
  • masseter
  • medial pterygoid
  • lateral pterygoid
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21
Q

temporalis

A

O: temporal bone
I: coronoid process of mandible
A: elevate & retract mandible

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22
Q

blood supply + venous drainage of the temporalis

A

I: CN V3
blood supply: maxillary A.
venous drainage: deep temporal v

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23
Q

masseter

A

O: zygomatic arch
I: coronoid process & ramus of manadible
A: elevate mandible & approximate teeth

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24
Q

blood supply + venous drainage of masseter

A

I: CN V3 (masseteric)
blood supply: maxillary a.
venous drainage: masseteric v

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25
medial pterygoid
O: maxially tuberosity & lateral pterygoid plate I: medial ramus & angle of mandible A: elevation & side-to-side movement of mandible
26
blood supply & venous drainage of medial ptergygoid
I: CN V3 (medial pterygoid) blood supply: maxillary a venous drainage: pterygoid plexus
27
what is the pterygoid plexus
venous drainage pterygoid plexus-->maxillary vein -->retromandibular vein--> internal jugular vein
28
lateral pterygoid
O: greater wing and lateral pterygoid plate I: condylar process of mandible A: protraction and side-to-side movement of mandible
29
blood supply + venous drainage of lateral pterygoid
I: CN V3 (lateral pterygoid) blood supply: maxillary a venous drainage: pterygoid plexus
30
superficial anterior neck muscles
1. platysma 2. sternoclediomastoid (SCM)
31
sternocleidomastoid
O: manubrium & clavicle I: mastoid process A: unilateral --> head rotation & lateral flexion Bilateral --> flexion
32
blood supply & venous drainage of sternocleidomastoid
I: CN XI blood supply: superior thyroid a venous drainage: internal jugular v
33
deep anterior neck muscles
hyoid muscles scalene muscles
34
hyoid muscles
two groups suprahyoid (above) infrahyoid (below)
35
suprahyoid
1. digastric 2. stylohyoid 3. mylohyoid 4. geniohyoid
36
infrahyoid
1. omohyoid 2. sternhyoid 3. thyrohyoid 4. sternothyroid
37
suprahyoid: digastric
O: inferior border of mandible I: temporal bone A: elevate hyoid & depress mandible
38
blood supply & venous drainage of suprahyoid: digastric
innervation: CN V3 (anterior) & CN VII (posterior) blood supply: facial a. (anterior) & occipital a./posterior auricular a. (posterior) venous drainage: internal jugular v
39
suprahyoid: stylohyoid
O: styloid process I: hyoid A: elevate/retract hyoid & elevate tongue
40
blood supply + venous drainage suprahyoid: stylohyoid
I: CN VII blood supply: occipital a venous drainage: internal jugular v
41
suprahyoid: mylohyoid
O: mylohyoid line (body of mandible) I: other mylohyoid & hyoid A: elevate hyoid, support tongue, depress mandible
42
blood supply + venous drainage of suprahyoid: mylohyoid
I: CN V3 (inferior alveolar) BS: facial a. & inferior alveolar a. VD: internal jugular v
43
suprahyoid: geniohyoid
O: inferior mental spine (body of mandible) I: hyoid A: elevate/protrude hyoid
44
blood supply + venous drainage of suprahyoid geniohyoid
I: C1 (sheath of CN XII) BS: lingual a VD: internal jugular v
45
infrahyoid: omohyoid
O: scapula I: hyoid A: depress hyoid
46
blood supply + venous drainge of infrahyoid: omohyoid
I: ansa cervicalis (C1-C3) BS: superior & inferior thyroid a. VD: superior & inferior thyroid v
47
infrahyoid: sternohyoid
O: manubrium (sternum) I: hyoid A: depress hyoid
48
blood supply + venous drainage of infrahyoid: sternohyoid
I: ansa cervicalis (C1-C3) BS: superior thyroid a VD: superior thyroid v
49
infrahyoid: thyrohyoid
O: thyroid cartilage I: hyoid A: depress hyoid
50
blood supply + venous drainage of infrahyoid: thyrohyoid
I: C1(sheath of CN XII) BS: superior thyroid a. VD: superior thyroid v
51
infrahyoid: sternothyroid
O: manubrium I: thyroid cartilage A: depress hyoid & open laryngeal inlet
52
blood supply & venous drainage of infrahyoid : sternothyroid
I: ansa cervicalis (C1-C3) BS: superior thyroid a VD: superior thyroid v
53
scalene muscles
3 muscles deep neck O/I: between ribs 1/2 & transverse processes of C1/2 vertebrae
54
functions of scalene muscles
neck flexion & rotation
55
blood supply + venous drainage of scalene muscles
I: C3-C8 BS: inferior thyroid a VD: inferior thyroid v
56
list all the hyoid muscles
- mylohyoid - geniohyoid - thyrohyoid - sternohyoid - sternothyroid - stylohyoid - posterior belly of digastric - omohyoid
57
list the deep anterior neck muscles
- geniohyoid - thyrohyoid - sternohyoid - sternothyroid - middle scalene - anterior scalene - posterior scalene - omohyoid
58
posterior neck
superficial to deep dissection- based apprach to reach the suboccipital triangle
59
steps to seeing the suboccipital triangle
1. reflect or remove the trapezius 2. reflect or remove splenius capitis 3. reflect levator scapulae 4. reflect or remove semispinalis capitis 5. identify the suboccipital triangle
60
suboccipital triangle
3 major muscles 1. obliquus capitis superior 2. rectus capitis posterior major 3. obliquus capitis inferior 1 adjacent muscle 4. rectus capitis posterior minor
61
functions of suboccipital triangle
- neck extension & rotation - postural support
62
contents of of suboccipital triangle
- vertebral A - greater occipital N
63

ANAT 316 (17 decks)

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