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NBCE Part 1 > Set 7 Myology > Flashcards

Set 7 Myology Flashcards

1
Q

what muscles of the face and tongue are innervated by CN VII?

A

orbicularis oris, zygomaticus, mentalis, orbicularis oculi, and buccinator

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2
Q

What is the innervation of genioglossus, hyoglossus, and styloglossus?

A

CN XII (hypoglossal)

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3
Q

What is the action of orbicularis oculi?

A

eyelid sphincter

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4
Q

What is the action of zygomaticus?

A

mouth angle back and up

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5
Q

What is the action of mentalis?

A

raises lower lip

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6
Q

What is the action of orbicularis oris?

A

contracts/protrudes lips

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7
Q

What is the action of buccinator?

A

compresses cheeks

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8
Q

What is the action of genioglossus?

A

protrudes tongue

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9
Q

What is the action of hyoglossus?

A

depresses tongue

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10
Q

What is the action of styloglossus?

A

retracts and elevates tongue

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11
Q

What are the origin/insertion of orbicularis oculi?

A

frontal bone and maxilla/eyelid

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12
Q

What are the origin/insertion of zygomaticus?

A

zygomatic bone and corner of mouth

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13
Q

What are the origin/insertion of mentalis?

A

mandible and chin

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14
Q

What are the origin/insertion of orbicularis oris?

A

maxilla and mandible/mouth

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15
Q

What are the origin/insertion of buccinator?

A

maxilla and mandible/orbicularis oris

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16
Q

What are the origin/insertion of genioglossus?

A

mandible/hyoid and tongue

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17
Q

What are the origin/insertion of hyoglossus?

A

hyoid and tongue

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18
Q

What are the origin/insertion of styloglossus?

A

temporal bone and tongue

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19
Q

What is the innervation of the muscles of mastication?

A

CN V Trigeminal

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20
Q

What are the muscles of mastication?

A

temporalis, masseter, medial pterygoid and lateral pterygoid

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21
Q

What is the action of temporalis?

A

elevate and retract jaw

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22
Q

What is the action of masseter?

A

elevate jaw

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23
Q

What is the action of medial pterygoid?

A

elevate and protract jaw

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24
Q

What is the action of lateral pterygoid?

A

protrudes jaw and depresses

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25
Q

What is the prime mover of jaw closure?

A

masseter

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26
Q

What is the origin and insertion of temporalis?

A

temporal bone and coronoid of mandible

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27
Q

What is the origin and insertion of masseter?

A

zygomatic arch and mandible

28
Q

What are the muscles of the superficial neck?

A

platysma and SCM

29
Q

What is the innervation of platysma and SCM?

A

CN VII

30
Q

What is the action of platysma?

A

depresses lower lip and jaw

31
Q

What is the action of SCM?

A

one side: ipsilateral flexion, contralateral rotaton both: flexion

32
Q

What is the origin and insertion of SCM?

A

manubrium and clavicle/mastoid

33
Q

What are the suprahyoid muscles?

A

digastric, stylohyoid, mylohyoid, geniohyoid

34
Q

What is the innervation of digastric?

A

CN V and VII

35
Q

What is the innervation of stylohyoid?

A

CN VII

36
Q

What is the innervation of mylohyoid?

A

CN V

37
Q

What is the innervation of geniohyoid?

A

C1 via CN XII

38
Q

What is the function of digastric?

A

elevates hyoid, depresses jaw

39
Q

What is the function of stylohyoid?

A

elevates and retracts hyoid

40
Q

What is the function of mylohyoid?

A

elevates hyoid

41
Q

What is the function of geniohyoid?

A

pulls hyoid anterior and up

42
Q

What is the origin and insertion of digastric?

A

mandible and mastoid/hyoid

43
Q

What are the infrahyoid muscles?

A

thyrohyoid, omohyoid, sternohyoid, sternothyroid (TOSS)

44
Q

What is the innervation of omohyoid, sternohyoid, and sternothyroid?

A

C1-C3

45
Q

What is the innervation of thyrohyoid?

A

C1 via CN XII

46
Q

What is the function of sternohyoid?

A

depresses hyoid

47
Q

What is the function of sternothyroid?

A

pulls thyroid cartilage down

48
Q

What is the function of omohyoid?

A

depresses and retracts hyoid

49
Q

What is the function of thyrohyoid?

A

depresses hyoid (and elevates thyroid cartilage)

50
Q

What is the nickname for the infrahyoid muscles?

A

strap muscles

51
Q

What is the general function of the infrahyoid muscles?

A

swalloing and speaking

52
Q

What is the origin and insertion of sternohyoid?

A

manubrium and hyoid

53
Q

What is the origin and insertion of sternothyroid?

A

manubrium and thyroid cartilage

54
Q

What is the origin and insertion of omohyoid?

A

scapula and hyoid

55
Q

What is the origin and insertion of thyrohyoid?

A

thyroid cartilage and hyoid

56
Q

What is the innervation of longus colli?

A

primary rami C2-C8

57
Q

What is the innervation of scalenus anterior?

A

primary rami C5-C8

58
Q

What is the innervation of scalenus medius?

A

primary rami C3-C4

59
Q

What is the innervation of scalenus posterior?

A

primary rami C5-C8

60
Q

What is the action of longus colli?

A

one: lateral flexion both: flexes and rotates vertebrae

61
Q

What is the action of the anterior and middle scalene?

A

one: lateral flexion elevates 1st rib, flexes and rotates vertebrae

62
Q

What is the action of scalenus posterior?

A

one: lateral flexion elevates 2nd rib, flexes and rotates vertebrae

63
Q

What muscle attaches to the anterior tubercle of atlas?

A

longus colli

64
Q

What is the origin and insertion for the scalenes?

A

transverse process of the cervical and the first two ribs

65
Q

What are the contents of the suboccipital triangle?

A

suboccipital nerve and vertebral artery

NBCE Part 1 (40 decks)

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