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Clinical anatomy 1 > Muscles Of Thorax, Head & Neck > Flashcards

Muscles Of Thorax, Head & Neck Flashcards

1
Q

Name the extra-ocular muscles

A

1) superior oblique
2) superior rectus
3) inferior rectus
4) lateral rectus
5) medial rectus
6) inferior oblique
7) levator palpebrae superioris

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2
Q

What extraocular muscles does CN III innervate & name branch

A 
1) Superior ramus: 
	superior rectus 
	levator palpebrae superioris
2) inferior ramus:
	inferior rectus
	medial rectus
	inferior oblique
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3
Q

What extraocular muscles does CN IV innervate?

A

Trochlear nerve: superior oblique muscle

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4
Q

What extraocular nerve does CN VI innervate?

A

Abducens: lateral rectus

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5
Q

Elevates eye

A

1) superior rectus

2) inferior oblique

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6
Q

Abducts eye

A

1) lateral rectus
2) inferior oblique
3) superior oblique
4) superior rectus

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7
Q

Adduct eye

A

1) medial rectus

2) inferior rectus

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8
Q

Depress eye

A

1) superior oblique

2) inferior rectus

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9
Q

Intorsion (inward rotation)

A

1) superior rectus

2) superior oblique

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10
Q

Extortion (outward rotation)

A

1) Inferior oblique

2) inferior rectus

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11
Q

List the suboccipital neck muscles:

A

Superior oblique
Inferior oblique
Rectus capitus posterior minor
Rectus capitus posterior major

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12
Q

What is the innervation for the suboccipital neck muscles

A

All are Innervated by the suboccipital nerve, which the spinal nerve is C1 (dorsal ramus)

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13
Q

What is the attachment for superior oblique (suboccipital muscle)

A

Transverse process of C1 to the area between the superior & inferior nuchal line

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14
Q

What are the attachments for the inferior oblique muscle (suboccipital)

A

Spinous process of C2 to the transverse processes of C1

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15
Q

What are the attachments for the rectus capitus posterior minor muscle?

A

Tubercle on posterior arch of C1 to the medial aspect of the inferior nuchal line

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16
Q

What are the attachments for the rectus capitus posterior major?

A

Spinous process of C2 to the lateral aspect of inferior nuchal line

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17
Q

List the muscles of mastication

A

Temporalis
Masseter
Lateral pterygoid
Medial pterygoid

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18
Q

What is the innervation for masseter muscle

A

CN V (Trigeminal)
V3 mandibular
Masseteric branch

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19
Q

What is the innervation for temporalis?

A

CN V (Trigeminal)
V3 mandibular
Deep temporal branch

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20
Q

What is the innervation for lateral pterygoid muscle

A

CN V (Trigeminal)
V3 Mandibular
Lateral pterygoid branch

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21
Q

What is the innervation for medial pterygoid?

A

CN V (Trigeminal)
V3 mandibular
Medial pterygoid branch

22
Q

What is action for masseter muscle

A

Elevate, protract, retract mandible

23
Q

What is action for temporalis muscle

A

Elevate and retract mandible

24
Q

What is action for lateral pterygoid muscle

A

Side to side motion, depress and protract mandible

25
Q

What is the action for medial pterygoid muscle

A

Side to side motion, elevate mandible

26
Q

What are the attachments for the masseter muscle

A

Zygomatic arch to the angle of mandible and lateral aspect of ramus

27
Q

What are the attachments for temporalis muscle

A

Temporal fossa to Coracoid process and anterior border of mandible

28
Q

What are the attachments for the lateral pterygoid

A

Infratemporal surface of sphenoid and lateral surface of lateral pterygoid plate to the neck of the mandible and TMJ disk

29
Q

What are the attachments for the medial pterygoid muscle

A

Medial surface of lateral pterygoid plate & adjacent maxilla to the medial spect of the angle of mandible

30
Q

List the muscles of facial expression:

A 
Orbicularis oculi
Levator labiii superioris
Zygomaticus major/minor
Orbicularis oris
Buccinator
Depressor labii inferioris
Depressor anguli oris
Frontalis
Platysma
Nasalis
31
Q

What is innervation of orbicularis oculi

A

CN VII: facial nerve

Temporal & zygomatic branches

32
Q

What is innervation for frontalis muscle

A

CN VII facial nerve

Deep temporal branch

33
Q

What is the innervation for buccinator?

A

CN VII facial

Buccal branch

34
Q

What is innervation for levator labii superioris?

A

CN VII Facial
Zygomatic
Buccal

35
Q

What is innervation for depressor anguli oris?

A

CN VII Facial

Buccal and mandibular branches

36
Q

What is the innervation for nasalis muscle

A

CN VII Facial

Buccal branch

37
Q

What is the innervation for platysma?

A

CN VII Facial

Cervical branch

38
Q

What is the innervation for depressor labii inferioris

A

CN VII

Mandibular branch

39
Q

What is the innervation for Zygomaticus major/minor?

A

CN VII

Zygomatic and Buccal branches

40
Q

What is the innervation for orbicularis oris muscle?

A

CN VII Facial

Buccal and mandibular branches

41
Q

What is the action for orbicularis oculi?

A

Close eye/wink

42
Q

What is action for frontalis?

A

Elevate eyebrows, protract scalp

43
Q

What is action for levator labii superioris?

A

Raise & evert upper lip (shows sadness)

44
Q

What is the action for orbicularis oris?

A

Close/purse lips

45
Q

What is action for Zygomaticus major/minor

A

Raise corners of mouth (smile)

46
Q

What is action of depressor anguli oris?

A

Laterally depress sides of mouth (frown, sadness)

47
Q

What is action of depressor labii inferioris

A

Depress lower lip, pout

48
Q

What is action of buccinator?

A

Compress cheeks when blowing

49
Q

What is action of platysma

A

Elevate anterior nuchal skin (shows stress)

50
Q

What is action of nasalis

A

Compress/widen nasals

Clinical anatomy 1 (6 decks)

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